Hogan Gidley, another White House spokesperson, chose to hit back at Graham using his own words.
Democrats and Republicans have repeatedly pointed fingers at each other over the government closure, which stretched into its third day on Monday.
"It is nearly appalling to me that you have a senator that isn't stepping up, doing the right thing", Sanders said.
"Mr. Miller is well-known in the Senate for having views that are outside the mainstream", adding that the "Stephen Miller approach to immigration has no viability".
At the center of the fight is the Deferred Action for Childhood Arrivals (DACA) program, which President Trump said a year ago he would rescind while providing Congress with a window of time to craft a legislative fix.
'And we're never going to get there as long as we embrace concepts that can not possibly get 60 votes. "I'm "Lindsey Grahamnesty, ' 'Lindsey Gomez" - you name every name you want to give to me, it's been assigned to me and I'm still standing", he boasted. If it passes, the government will extend funding until 8 February, allowing immigration bills to be brought to the floor of the Senate to be voted upon before 5 March, when DACA participants lose their legal status.
Miller, who was recently escorted off the CNN set after losing his cool at of "State of the Union" host Jape Tapper during an interview, is believed to be an integral part of the Islamophobic team in the Trump administration that drafted the Muslim travel ban.
'As long as Sen.
"As long as Senator Graham chooses to support legislation that sides with people in this country illegally and unlawfully instead of our own American citizens, we are going nowhere", Hidlley said. Stephen Miller is certainly part of that conversation and part of this process, but he's advocating on behalf of the president'.
Kelly didn't respond to an interview request and Miller directed questions to the White House press office. 'He's here to push the president's agenda, like everybody in this building'. "We are doing our best to carry out what the president has laid out and to implement and communicate his principles and Stephen's no different on that front than anyone else".
Some on Capitol Hill are arguing that Miller is pushing President Trump to be too much of an immigration hawk. Period, end of story'.
A senior White House official told The Washington Post on Sunday that the brash young aide has told colleagues that his 'consuming focus is to make what I know the president wants in an immigration deal a legislative reality'. Miller is now one of Trump's top negotiators on immigration.
'The White House staff, I think, is making it very hard, ' he told reporters at the Capitol.
It isn't President Donald Trump, and it isn't White House Chief of Staff Gen. John Kelly. Obama's DACA program issued work permits to illegal immigrants brought to the U.S.as children and granted them certain protections from deportation.