This is rich beyond belief.

The president of the United States apparently sees nothing wrong with the attorney general of the United States booking a spendy family party at a hotel the president owns.

Donald Trump and William Barr appeared made for each other.

The AG booked a party for Dec. 8 that will cost about $30,000 at the Trump International Hotel in Washington, D.C. Barr will pay for the party out of his own pocket.

But, my goodness, this appears to violate that knotty issue called the Emoluments Clause in the U.S. Constitution. The president is not supposed to profit financially while in office. Yet the attorney general is going to have a big family party at a Trump property, giving the president a healthy chunk of change.

There are ethics concerns about the wazoo, man.

According to FoxNews.com: “Career ethics officials were consulted and they determined that ethics rules did not prohibit him from hosting his annual party at the Trump hotel,” the DOJ official told The Post.

Of course the Justice Department wouldn’t see anything wrong it! Barr runs the department; Trump nominated Barr to become the nation’s top law enforcement official. Barr has been acting as Trump’s personal lawyer more than the nation’s top legal eagle.

Others do see a problem … as if it matters one damn bit to the attorney general, let alone the president.