Mike Gillis has served in numerous Republican administrations over the decades. In an op-ed published in the New Yorker this Thursday, Mike Gillis announced that he's leaving the Republican Party.

"...I cannot stand idly by and watch as these crooks take over the party I love. I cannot abide this coarsening of discourse, and so on and so forth, etc., etc. Here are the reasons that I am leaving the Republican Party," Gillis writes.

According to Gillis, Trump is "ruthlessly" dividing the country.

"Brother pitted against brother, cat against dog, exterminator against cockroach, sentient robot against mad inventor. Americans must accept that, no matter our particular beliefs, we are all citizens of the United States—whether we be Republican or Democrat, Canadian or Bulgarian, Mesopotamian or Sumerian."

President Donald Trump's top economic and trade adviser Larry Kudlow is "out of touch," according to former White House economist Austan Goolsbee.

Speaking to MSNBC's Katy Tur, Goolsbee explained that Trump's celebration of the GDP is unwarranted because it took such a significant dive. It's a lot like losing $100 and getting back $60, said Tur.

"You score five runs in one inning, that is a good inning, but if you let up ten runs in the inning before that you're still way down," Goolsbee explained. "I think the numbers look very much like what happened in the job market over the summer. Where we started with a 21 million job loss, and we made back a little over half of that. And then we kind of stalled out. We're still adding jobs, but you also saw this morning another epically bad new unemployment claims number. You still have well over 700,000 people filing for unemployment insurance newly this week. Now we're seeing this on the GDP side. Certainly, this is a positive. You would not want a smaller number, but it has to be bigger and more sustained than what we saw today before we can say that we're back to normal."