Compounds that have the same molecular formula but different chemical structures are called isomers. Remember isomerism is a property between a pair (or more) of molecules, i.e. a molecule is an isomer of another molecule. A similar relationship is that of brother or sister...
Many Americans are up in arms. But in fact, keeping out desperate souls seeking entry into America has deep roots. On this day 100 years ago, the United States passed the strictest immigration law of its time: the Immigration Act of 1917. The law restricted the immigration of undesirables, including many people from the Middle East and Asia, through increased taxes, tests and outright bans.
In 2005, the U.S. House of Representatives passed the Border Protection, Anti-terrorism, and Illegal Immigration Control Act of 2005, and in 2006 the U.S. Senate passed the Comprehensive Immigration Reform Act of 2006. Neither bill became law because their differences could not be reconciled in conference committee.iting Congressâ failure to enforce U.S. immigration laws, the state of Arizona confronted reform and on April 23, 2010 Republican Governor Jan Brewer signed the Support Our Law Enforcement and Safe Neighborhoods Act (Arizona SB 1070), the broadest and strictest immigration reform imposed in the United States.