WASHINGTON — Defying President Donald Trump, senators sent a strong signal that they want to punish Saudi Arabia for its role in the killing of journalist Jamal Khashoggi. By a bipartisan 63-37 vote, the Senate opted to move forward with legislation calling for an end to U.S. involvement in the Saudi-led war in Yemen. The vote on Wednesday was a rebuke not only to Saudi Arabia but also to Trump’s administration, which has made clear it does not want to torpedo the long-standing U.S.