Philip Allen Lacovara in WaPo: “President Trump’s pardon of former Arizona sheriff and civil rights abuser Joe Arpaio raises the question of whether the president may act with impunity to pardon individuals caught up in special counsel Robert S. Mueller III’s investigation of the Trump campaign’s dealings with Russia. Based on my experience studying the pardon power during the Watergate investigation, I believe the answer is no.” (Don’t look at the Arpaio pardon as just another one of the many acts that don’t seem normal during the Trump era. This is different. And it’s a really big deal.)

+ Vox: 10 legal experts on why Trump can’t pardon his way out of the Russia investigation.