Before being sworn into office in 2017, Trump hosted a concert at the Lincoln Memorial featuring performances by Toby Keith, Lee Greenwood and 3 Doors Down. "I don't apologize for performing for our country or military," Keith said at the time.

In an exclusive interview with Fox News Digital, Lee Greenwood came to Carrie Underwood's defense after some criticized the country star for agreeing to perform at the presidential inauguration on Jan.

I mean, he is the next president. Stop this negative crap. Let’s move on.”