WASHINGTON (Reuters) - The U.S. Senate failed to advance any legislation to protect “Dreamer” immigrants on Thursday, falling short of the 60 votes needed to move forward on four proposals including one backed by President Donald Trump and two bipartisan measures. The series of votes came after Trump slammed the leading bipartisan proposal as “a total catastrophe,” and the White House threatened to veto the bill, which had been considered the most likely to get through a deeply divided Senate.