The former president again insisted he had won the 2020 presidential election and alleged massive fraud.
"Donald Trump is the head of the Republican Party still, let's make no mistake about that," Grenell told Newsmax TV Saturday.
Sebastian Gorka, who was a member of the Trump Administration in 2017, is expected to be appointed to a position on the National Security Education Board.
Representative Mike Kelly and Trump's former deputy assistant Sebastian Gorka are the latest GOP figures to admit taking the drug.
Former Trump adviser told Fox Business Network's Lou Dobbs Tuesday that people "should welcome" the Iranian missile attack on U.S. forces in Iraq because "now there can be no question that Iran is a threat to American national security."
Sebastian Gorka angrily walked over to Playboy correspondent Brian Karem in the Rose Garden, before yelling in his face: "You're a punk. You're not a journalist. You're a punk!"
Radio host was discussing video posted on Twitter by "Pizzagate" conspiracy theorist Jack Posobiec.
"It is about illegal aliens getting to vote for Democrats, as they see it, and recreate a Democrat plantation," Gorka told Fox Business.
The Green New Deal, claimed Gorka, is a "Watermelon. Green on the outside, deep, deep red communist on the inside."
"Much will be learned from this very good read!" President Donald Trump said.
The congresswoman-elect said she was on "the right side of history" after being criticized by the Fox News contributor.
The former White House aide said that President Donald Trump would be able to push through his plan, as he has "won every single battle so far."
New York Democratic congressional primary winner Alexandria Ocasio-Cortez compared the "existential threat" posed by climate change to that of Nazi Germany during World War II.
Sebastian Gorka, appearing on The Sean Hannity Show, said the left was trying to "normalize violence."
"I feel for my former colleagues being forced to read this garbage."
The former White House aide said the Kremlin had been "mucking around" in elections for decades.
Clinton "[gave away] nuclear capabilities to our enemies," the ex-White House adviser said.
Former White House Aide Sebastian Gorka said that if Harvey Weinstein followed Vice President Pence's advice on women, he would not be accused of sexual harassment.
The White House said Gorka's claim was "100 percent false and Sebastian Gorka and Steve Bannon played no role in the U.N. speech."
Ivanka Trump's role in the White House is just as ambiguous to some insiders as it is to her critics.
Gorka said Trump would not back down from his agenda. "The question is, Are the people around him going to support him?" he said.
The former deputy assistant to the president also claimed he was not asked to leave the White House.