Walter Shaub accused members of Congress who participated in a Kuwaiti bash at the Trump International Hotel in Washington of "complicity."
The now-deleted post suggests the Trump ally is being framed.
The Democrat, who served two terms as governor and two terms as Denver mayor, vowed in a campaign video to "repair the damage done to our country."
"Shame!" the president decried.
“Real change never takes place from the top on down,” the Vermont senator said Sunday. “It always takes place from the bottom on up.”
Former White House counsel Don McGahn will return to the law firm Jones Day, he told CNN on Sunday.
On the 54th anniversary of a famous civil rights demonstration in Selma, Alabama, several Democratic presidential contenders joined Hillary Clinton in saying that not enough progress has been made to end voting discrimination and racism.
The downgrade is just the latest in a string of divisive decisions by the Trump administration that have backed Israel and alienated the Palestinians.