One of President Trump's most ardent supporters fired a warning shot across the commander-in-chief's bow.
In an interview on Fox News, Former Speaker of the House Newt Gingrich called out the president for the gaffes he has made and the growing list of enemies he is creating in his first six months in Washington.
Gingrich said, "If the president wants to have a serious, stable presidency, he needs to enact serious changes."