/ Updated By Ali Vitali 
 
 President Donald Trump quietly signed a bill into law Tuesday rolling back an Obama-era regulation that made it harder for people with mental illnesses to purchase a gun. Related: Assault Weapons Not Protected by Second Amendment, Federal Appeals Court Rules 
 
 The original rule was hotly contested by gun rights advocates who said it infringed on Americans’ Second Amendment rights. The regulation, finalized in December under Obama's tenure, required the Social Security Administration to disclose information quarterly to the national gun background check system about certain people with mental illness. Had the rule fully taken effect, the Obama administration predicted it would have added about 75,000 names to that database. Both the National Rifle Association and the American Civil Liberties Union spoke out against it. The ACLU, which advocates for people with mental health struggles, said the rule reinforced a stereotype that people with mental disabilities are violent. "Republicans always say we don’t need new gun laws, we just need to enforce the laws already on the books.
– President Trump has undone one of his predecessor's final executive actions, a measure designed to make it harder for the mentally ill to own guns. The issue is a little more complicated than the usual gun-control debate, however: This time, both the NRA and the ACLU opposed the measure. The move by President Obama in December required the Social Security Administration to provide information about people who met certain criteria to the national database for background checks, reports NBC News. Affected would be those who get full disability benefits because of a mental illness and who were deemed unfit to manage their own finances, explains CNN. They were to be notified that they might not be eligible to own a gun, though they could appeal. The Obama administration estimated it would apply to 75,000 people. Last week, the House and Senate passed a bill to undo the rule, and Trump signed it into law on Tuesday. He had promised to "un-sign that [bill] so fast" even before he became president, reports USA Today. It was criticized by both the ACLU, which said it added to the stereotype that equates mental illness with violence, and the NRA, which opposed it on Second Amendment grounds. The head of the NRA's Institute for Legislative Action says the move "marks a new era for law-abiding gun owners, as we now have a president who respects and supports our arms." Gun-control advocates say the law would've prevented suicides and accidental deaths.