WASHINGTON (Reuters) - U.S. President Donald Trump on Wednesday expressed confidence that the Republican-led Senate would ultimately prevail in  passing legislation aimed at repealing and replacing the 2010 healthcare law passed under his predecessor, former Democratic president Barack Obama. “It’s very tough ... I think we’re going to get it over the line,” Trump told reporters at the White House ahead of a separate event on energy, adding that healthcare was “probably the toughest subject” to get passed in Congress.  