The Senate and the Saudis

Lee-Sanders goes too far but Trump is losing control of his policy.

American Presidents have great constitutional leeway on foreign policy, but it isn’t unlimited, as Donald Trump is discovering on Saudi Arabia. A bipartisan Senate majority is trying to send a message to the Saudis and Mr. Trump that U.S. policy needs to include concern for values as well as national interest.

That’s the meaning of the Senate’s 63-37 vote last week to allow a debate to begin on a bill to cut off U.S. support for the Saudi-led war in Yemen. Sponsored by Vermont Socialist Bernie Sanders and Utah Republican...