Majority Leader Mitch McConnell has canceled the Senate’s August recess, but a fair question is why? What’s the point of staying in Washington unless the GOP wants to accomplish something?

Those questions arise with the news that the Senate won’t take up a $15 billion spending rescissions bill that the House passed last week. Under the Budget and Impoundment Control Act of 1974, Congress can claw back spending with a simple majority vote, and in May the Trump White House sent a modest package of such rescissions to Capitol...