When President Trump last week pulled out of a historic international agreement to mitigate global warming, he said he did so because it was a bad deal.

“The Paris deal hamstrings the United States,” Trump said.

He added: “I cannot in good conscience support a deal that punishes the United States.”

Trump's U.N. ambassador later insisted that the president planned to renegotiate a better deal to hold down world temperatures — though nearly every other country supports the Paris agreement and Trump has repeatedly called global warming a hoax in years past. “We’re getting out,” Trump said in his Rose Garden speech on Thursday, referring to the accord. But “we will see if we can make a deal that’s fair.”

Reaction to this promise was generally divided along the lines of cautious trust and open derision.

Former CNN host Piers Morgan was among those in the trust camp, for instance.

Others were clearly skeptical.

“In a dramatic announcement from the White House Rose Garden on Thursday,” New Yorker satirist Andy Borowitz wrote, “Donald J. Trump pronounced the planet Earth a 'loser' and vowed to make a better deal with a new planet.”

And then there was John F. Kerry, who helped negotiate the accord when he was secretary of state under President Barack Obama.

NBC's Chuck Todd was grilling Kerry on whether, in hindsight, he wishes he'd made the deal a little less vulnerable to reversal by future presidents.

“We presumed that common sense, that basic economics, that science would ultimately prevail,” Kerry said.

So then, Todd asked, how about that new deal that Trump wants?

More like no deal, Kerry said.

“He's going to go out and find a better deal?” he said. “That's like, I mean, that's like O.J. Simpson saying he's going to go out and find the real killer.”

Kerry meant the former football star's infamous statement after his acquittal on murder charges in the 1990s — that “when things have settled a bit, I will pursue as my primary goal in life the killer or killers who slaughtered” his ex-wife and her friend.

“Everybody knows he's not going to do that because he doesn't believe it,” Kerry told Todd, in case the analogy wasn't clear. “Because if he did believe in it, you wouldn't pull out of Paris.”

Just as no one knows the fate of the Paris accord or its potential replacement, it's unclear how much Simpson actually did to find new suspects for crimes that many people still think he committed.

A few years after his acquittal, a civil jury ordered Simpson to pay millions in a wrongful-death lawsuit. He is currently in prison for armed robbery, kidnapping and assault, among other charges, after an altercation over sports memorabilia.

Last year, a friend and former manager of Simpson's told a radio station that they did, in fact, track down the real killer — and even tried to take their information to police. But nothing apparently came of it, and the friend would not reveal the real killer's name.

Republicans and Democrats on June 4 commented on President Trump's tweets calling for a travel ban and criticizing the mayor of London after an attack in Britain's capital left seven people dead the day before. (Bastien Inzaurralde/The Washington Post)

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