By Patricia Zengerle WASHINGTON (Reuters) -The U.S. Congress voted to impose further economic pain on Russia over the invasion of Ukraine on Thursday, passing one measure to remove its “most favored nation” trade status and another to ban oil imports. The Senate voted 100-0 in favor of the measure removing Permanent Normal Trade Relations (PNTR) status for both Russia and its close ally Belarus. Shortly afterward, it backed the energy measure, also by a 100-0 tally. Senate approval sent the legislation to the House of Representatives, which quickly passed the trade measure by 420 to 3, and the…