It seems Sanders' comments tipped off Trump to the fact that Corker aired the criticism in the first place. He also called for "radical changes" at the White House.
"The president has not yet been able to demonstrate the stability, nor some of the competence, that he needs to demonstrate in order to be successful", Corker said. Already there are indications that the populist wing of the Republican party in Tennessee which includes the most ardent Trump supporters doesn't like it one bit.
On Thursday, White House press secretary Sara Huckabee Sanders responded to a reporter's question about Corker during her media briefing.
He claimed that Corker "is constantly asking me whether or not he should run again".
Trump was already unhappy with Corker, the chair of the Senate Foreign Relations Committee, over legislation imposing new sanctions on Russian Federation and limiting Trump's ability to roll back the punishments.
Trump's tweet adds another layer to an increasingly chaotic relationship with Republican lawmakers at a time when they will need to cooperate on multiple crucial policy initiatives.
Sen. Bob Corker ventured further than most Republicans in Congress who've criticized President Trump when he suggested recently that Trump had not shown the "stability" or "competence" needed in the White House. That system goes a long way in explaining why the very conservative state has elected two moderate-to-liberal U.S. Senators in Sen. Corker called the ad tacky and said it should stop running, but it took the RNC almost a week to pull it off the air.
"It's OK to be critical of your party leader and your president, but I think there's a protocol and an etiquette that he has forgotten, especially for somebody who is so sensitive as Sen".
"They have great respect for on another", Alexander said, "so my reaction is maybe it's time for them to play another round of golf together". "I think the president was rather restrained in his tweet [about Corker] and was absolutely correct".
But Trump came into office as the most unpopular new president in the history of modern polling and things have not improved, according to new polling data released Friday.