Right as CNN's seven-hour Democratic town hall on climate change began Wednesday, President Trump tweeted a thread on the issue on the issue.

Trump first tweeted, "8 FACTS that #FakeNewsCNN will ignore in tonight’s 'Climate Forum,'" before going on to say the United States has been the country with the largest carbon emission reduction and China being the largest contributor to carbon emissions.

He also defended leaving the Paris Climate Agreement because it "protects the polluters, hurts Americans, and cost a fortune. NOT ON MY WATCH!"

"I want crystal clean water and the cleanest and the purest air on the planet – we’ve now got that!" Trump concluded the thread.

4. The U.S. now leads the world in energy production...



BUT...



5. Who's got the world's cleanest and safest air and water?



AMERICA! — Donald J. Trump (@realDonaldTrump) September 4, 2019

7. The badly flawed Paris Climate Agreement protects the polluters, hurts Americans, and cost a fortune. NOT ON MY WATCH!



8. I want crystal clean water and the cleanest and the purest air on the planet – we’ve now got that! — Donald J. Trump (@realDonaldTrump) September 4, 2019

The CNN climate town hall started off with former Secretary of Housing and Urban Development Julián Castro and will also include former Vice President Joe Biden and Sens. Elizabeth Warren, Bernie Sanders, Kamala Harris, and Cory Booker.

Castro said his first act as president would be to reenter the Paris Climate Accord and said he was in favor of a "carbon-free America."