When the sun shines, Wisconsin is hotter than ever before

Now Playing: Trump says ‘very serious’ threat to the US economy posed by climate change, warns of ‘catastrophic impact’ on economy article Now Play: Trump to host GOP lawmakers in D.C. next week Now Playing!

Trump’s Cabinet members are already in DC Now Playing:’I love the U.S. military’: Former Trump speechwriter blasts Trump Now Playing Trump administration announces changes to climate and health policy Now Playing’: Trump says his team will not sue ExxonMobil over climate change Now Playing’We can’t stop’: Trump promises to build wall to stop illegal immigration Now PlayingTrump: ‘I think it’s the greatest thing that’s ever happened to our country’ Now PlayingPresident Trump to visit the Smithsonian in D,C.

in June Now PlayingPence: ‘Trump is going to win the election,’ Pence says Now PlayingDonald Trump vows to take ‘all the steps necessary to make America great again’ Now PlayTrump: Trump’s economic agenda will be ‘very tough’ Now More Videos