The post office arrested Steve Bannon. Yes, the post office can arrest people.

The US Postal Service is out to deliver justice against former White House chief strategist Steve Bannon.

It may not have come as a shock that Bannon, often described as a grifter, was allegedly caught up in a scheme to defraud donors to a crowdfunding campaign that promised to construct a wall on the US-Mexico border.

But it was a surprise to some that the USPS, the same agency that President Donald Trump has tried to cripple ahead of an expected surge of mail-in ballots in November, carried out his...