As a gridlocked Congress threatens to stall the legislative promises that catapulted him to office, President Trump has raised hackles on the Hill by suggesting longstanding Senate rules simply be scrapped to cripple Democratic opposition. Trump has twice in the past week railed against “archaic” Senate procedures – first in an interview with Fox News and then again on Twitter – seeming to suggest the legislative filibuster be ended to take advantage of Republicans’ control of Congress. “And maybe at some point we're going to have to take those rules on, because, for the good of the nation, things are...