Trump increasingly upset and his one Senior Administration official put, it quote, unhinged over the immigration situation. Now that led to the sunday surprise. The forced resignation of homestand security secretary Kirstjen Nielsen. She had become the public face of the president s border bashing but apparently couldnt carry out what a Senior Administration source calls the president s unreasonable and impossible requests. She owes going to be replaced now by Kevin Mcaleenan who was the commissioner of customs and Border Protection, and, remember, hes the one who last month declared that the southern border was at the breaking point. Two days later the president threatened to close the border. Kaitlan collins is at the white house. Tell us about these developments. What happened here, kaitlan . Well, brianna, secretary nielsen was not intending on resign when she came to the white house yesterday, but during that facetoface with President Trump he was intent on demanding her resignati