We Need Ways to Hold Presidents Accountable

By LEE H. HAMILTON

“I ask how and why this decision was reached,” Utah Sen. Mitt Romney said in the Senate recently. He was calling for an investigation into President Trump’s decision to pull US forces out of Syria. “Was there no chance for diplomacy? Are we so weak and so inept diplomatically that Turkey forced the hand of the United States of America?”

Good questions, but here’s a wager: If the U.S. Senate does launch an investigation, would you bet that Romney or any other senator will even get close to posing them directly to the president? I didn’t think so.

We have a...