This rejection was said at a hearing in Washington, D.C. The mayors from Boston, Chicago, New York, and Denver were summoned to testify in Congress. Answering questions about their so-called "Sanctuary cities" for undocumented immigrants.

Denver Mayor Mike Johnston testified on Capitol Hill about the so-called "sanctuary city" policies on Wednesday morning.

Watch Denver Mayor Mike Johnston's full opening remarks delivered before his Congressional testimony on "sanctuary city" policies on Wednesday,.

Republican U.S. House of Representatives Speaker Mike Johnson on Tuesday ordered Democratic lawmaker Al Green removed from the House chamber during President Donald Trump's address to Congress, saying he violated decorum by standing during the speech.