The Roberts court has issued major rulings on incorporation of the Bill of Rights, gun control, affirmative action, campaign finance regulation, abortion, capital punishment, gay rights, unlawful search and seizure, and criminal sentencing.
Major decisions of the Roberts Court include:
Massachusetts v. EPA (2007): In a 5–4 decision in which the majority opinion was delivered by Justice Stevens, the Supreme Court upheld the Environmental Protection Agency's right to regulate carbon dioxide under the Clean Air Act.

District of Columbia v. Heller (2008): In a 5–4 decision in which the majority opinion was delivered by Justice Scalia, the Supreme Court held that the Second Amendment applies to federal enclaves, and that the amendment protects the right of individuals to possess a firearm, regardless of service in a militia.
McDonald v. City of Chicago (2010), in a 5–4 decision written by Justice Alito, extended this protection to the states.

Ashcroft v. Iqbal (2009): In a 5–4 decision written by Justice Kennedy, the court reversed the Second Circuit's decision not to dismiss a suit against former Attorney General John Ashcroft and others that claimed that the FBI engaged in discriminatory activities following the 9/11 attacks.
The court also extended the heightened pleading standard established in Bell Atlantic Corp. v. Twombly (2006), which had previously applied only to antitrust law.
The number of dismissals greatly increased after the Iqbal ruling.

Citizens United v. Federal Election Commission (2010): In a 5–4 decision in which the majority opinion was delivered by Justice Kennedy, the Court held that the provisions of the Bipartisan Campaign Reform Act which regulated independent expenditures in political campaigns by corporations, unions, and non-profits violated First Amendment freedom of speech rights.

National Federation of Independent Business v. Sebelius (2012): In a 5–4 decision written by Chief Justice Roberts, the Court upheld most of the provisions of the Patient Protection and Affordable Care Act, including the individual mandate to buy health insurance.
The mandate was upheld as part of Congress's power of taxation.
In a subsequent case, King v. Burwell (2015), the Court upheld the Patient Protection and Affordable Care Act, this time in a 6–3 opinion written by Chief Justice Roberts.

Arizona v. United States (2012): In a 5–3 decision delivered by Justice Kennedy, the Court held that portions of Arizona SB 1070, an Arizona law regarding immigration, unconstitutionally usurped the federal authority to regulate immigration laws and enforcement.

Shelby County v. Holder (2013): In a 5–4 decision delivered by Chief Justice Roberts, the Court struck down Section 4(b) of the Voting Rights Act of 1965, which provided a coverage formula for Section 5 of the Voting Rights Act.
The latter section requires certain states and jurisdictions to obtain federal preclearance before changing voting laws or practices, in an effort to prevent those states and jurisdictions from discriminating against voters.
Without a coverage formula, Section 5 of the Voting Rights Act is no longer in effect.

Burwell v. Hobby Lobby (2014): In a 5–4 decision delivered by Justice Alito, the Court exempted closely held corporations from the Affordable Care Act's contraception mandate on the basis of the Religious Freedom Restoration Act.

Riley v. California (2014): The Court unanimously held that the warrantless search and seizure of digital contents of a cell phone during an arrest is unconstitutional.

Obergefell v. Hodges (2015): In a 5–4 decision delivered by Justice Kennedy, the Court held that the Due Process Clause and the Equal Protection Clause both guarantee the right of same-sex couples to marry.

Whole Woman's Health v. Hellerstedt (2016): In a 5–3 decision delivered by Justice Breyer, the Court struck down restrictions the state of Texas had placed on abortion clinics as an "undue burden" on access to abortion.

Trump v. Hawaii (2017): In a 5–4 decision written by Chief Justice Roberts, the Court overturned a preliminary injunction agai
The Roberts court has issued major rulings on incorporation of the Bill of Rights, gun control, affirmative action, campaign finance regulation, abortion, capital punishment, gay rights, unlawful search and seizure, and criminal sentencing. Major decisions of the Roberts Court include:
Massachusetts v. EPA (2007): In a 5–4 decision in which the majority opinion was delivered by Justice Stevens, the Supreme Court upheld the Environmental Protection Agency's right to regulate carbon dioxide under the Clean Air Act.
District of Columbia v. Heller (2008): In a 5–4 decision in which the majority opinion was delivered by Justice Scalia, the Supreme Court held that the Second Amendment applies to federal enclaves, and that the amendment protects the right of individuals to possess a firearm, regardless of service in a militia. McDonald v. City of Chicago (2010), in a 5–4 decision written by Justice Alito, extended this protection to the states.
Ashcroft v. Iqbal (2009): In a 5–4 decision written by Justice Kennedy, the court reversed the Second Circuit's decision not to dismiss a suit against former Attorney General John Ashcroft and others that claimed that the FBI engaged in discriminatory activities following the 9/11 attacks. The court also extended the heightened pleading standard established in Bell Atlantic Corp. v. Twombly (2006), which had previously applied only to antitrust law. The number of dismissals greatly increased after the Iqbal ruling.
Citizens United v. Federal Election Commission (2010): In a 5–4 decision in which the majority opinion was delivered by Justice Kennedy, the Court held that the provisions of the Bipartisan Campaign Reform Act which regulated independent expenditures in political campaigns by corporations, unions, and non-profits violated First Amendment freedom of speech rights.
National Federation of Independent Business v. Sebelius (2012): In a 5–4 decision written by Chief Justice Roberts, the Court upheld most of the provisions of the Patient Protection and Affordable Care Act, including the individual mandate to buy health insurance. The mandate was upheld as part of Congress's power of taxation. In a subsequent case, King v. Burwell (2015), the Court upheld the Patient Protection and Affordable Care Act, this time in a 6–3 opinion written by Chief Justice Roberts.
Arizona v. United States (2012): In a 5–3 decision delivered by Justice Kennedy, the Court held that portions of Arizona SB 1070, an Arizona law regarding immigration, unconstitutionally usurped the federal authority to regulate immigration laws and enforcement.
Shelby County v. Holder (2013): In a 5–4 decision delivered by Chief Justice Roberts, the Court struck down Section 4(b) of the Voting Rights Act of 1965, which provided a coverage formula for Section 5 of the Voting Rights Act. The latter section requires certain states and jurisdictions to obtain federal preclearance before changing voting laws or practices, in an effort to prevent those states and jurisdictions from discriminating against voters. Without a coverage formula, Section 5 of the Voting Rights Act is no longer in effect.
Burwell v. Hobby Lobby (2014): In a 5–4 decision delivered by Justice Alito, the Court exempted closely held corporations from the Affordable Care Act's contraception mandate on the basis of the Religious Freedom Restoration Act.
Riley v. California (2014): The Court unanimously held that the warrantless search and seizure of digital contents of a cell phone during an arrest is unconstitutional.
Obergefell v. Hodges (2015): In a 5–4 decision delivered by Justice Kennedy, the Court held that the Due Process Clause and the Equal Protection Clause both guarantee the right of same-sex couples to marry.
Whole Woman's Health v. Hellerstedt (2016): In a 5–3 decision delivered by Justice Breyer, the Court struck down restrictions the state of Texas had placed on abortion clinics as an "undue burden" on access to abortion.
Trump v. Hawaii (2017): In a 5–4 decision written by Chief Justice Roberts, the Court overturned a preliminary injunction agai
Roberts Court