Senate Republicans are blocking for a second time a bill to clamp down the number of migrants allowed to claim asylum at the U.S.-Mexico border. The bill failed 43-50. Senate Majority Leader Chuck Schumer brought up the bill again to underscore Republican resistance to it. The bipartisan proposal was already rejected by most Republicans in February, but with immigration and border security becoming one of the top issues of this year’s election, Democrats are seeking to highlight Republican resistance to pursuing immigration legislation, along with other popular measures. Schumer is also planning to push forward a bill in June that would protect access to contraception.