The Senate on Thursday blocked a series of competing immigration bills, including a measure offered by Senate Judiciary Committee Republicans and endorsed by President Trump that would have imposed strict limits on legal immigration. Senate Majority leader Mitch McConnell had promised an open-ended debate on immigration, but none of the four bills offered on Thursday won the 60 votes needed to move forward. The result leaves Congress with no clear way to resolve the fate of 800,000 immigrants brought to the U.S. as children whose Obama-era deportation protections are set to expire on March 5.