The news is filled with reports of President Trump’s “assault” on the U.S. Postal Service. The president, Democrats and some in the media say, is deliberately slowing mail delivery and crippling the Postal Service so that it cannot handle an anticipated flood of voting by mail in the presidential election. Former President Barack Obama said Trump is trying to “actively kneecap” the Postal Service to suppress the vote. Speaker Nancy Pelosi has called the House back into session this week and has set an “urgent hearing” for Aug. 24, demanding Postmaster General Louis DeJoy and the head of the Postal Service Board of Governors testify “to address the sabotage of the Postal Service.”

Some of the accusations have grown so frantic that they resemble the frenzy of a couple of years ago over the allegation, from many of the same people, that Trump had conspired with Russia to fix the 2016 election. Now, it’s the Postal Service. But what actually is going on? Here is a brief look at some of the issues involved.