What did Donald Trump do today?

He doubled down on his attacks on the documents that supposedly show he did nothing wrong.

Trump claims not to know what is in the Mueller report, but his opinion of it has changed radically in the last week or so. He's stopped saying he'll be happy to have it released, and as his daily Twitter time today shows, he's returned to calling the Department of Justice prosecutors who wrote it names.

Also this morning, Trump dispatched his chief of staff, Mick Mulvaney, to insist that Congress will "never" be allowed to see his or his businesses' tax returns. That's not up to him, but Trump has retained lawyers to try to prevent the House Ways and Means Committee from examining them, which it is legally permitted to do. 

Officially, at least, Trump's position is that both the Mueller report and his tax returns would do nothing but prove his innocence. 

In both cases, Trump has the authority to release these documents that supposedly exonerate him, but he has refused to do so. He has not offered any explanation as to why.

Why should I care about this?

• Innocent people don't usually actively conceal evidence that would prove their innocence.