WASHINGTON — The Obama administration spent more money on immigration enforcement in the last fiscal year than all other federal law enforcement agencies combined, according to a report on the government’s enforcement efforts from a Washington think tank.

The report on Monday from the Migration Policy Institute, a nonpartisan group focused on global immigration issues, said in the 2012 budget year that ended in September the government spent about $18 billion on immigration enforcement programs run by Immigration and Customs Enforcement, the US-Visit program, and Customs and Border Protection.