Impeachment trial heads to historic end

Washington • President Donald Trump’s impeachment trial heads toward a historic conclusion this week, with senators all-but-certain to acquit him on charges of abuse of power and obstruction of Congress after narrowly rejecting Democratic demands to summon witnesses.There’s still plenty of drama to unfold before Wednesday’s vote.The vote is expected to cap a monthslong investigation spurred by a whistleblower complaint that Trump improperly withheld U.S. military aid from