Postmaster General Steiner must resign

Weeks before Americans begin voting in the midterm elections, the Trump administration wants to change the rules for voting by mail before the courts have even decided whether the president has the authority to do so. Two federal courts have already concluded that key parts of President Trump’s mail-ballot executive order cannot take effect while the litigation proceeds. Now, the administration is asking the Supreme Court to set those rulings aside and allow the order to take effect anyway. If it succeeds, the rules governing how millions of Americans vote by mail could change just weeks before Election Day. And...