Grisham has granted interviews to Fox News, Sinclair Broadcasting Group and One America News network, all conservative-leaning networks.
"I am only the third woman and the first mom to ever be the White House press secretary," Sanders said.
"She does it her way and it's the right way. She's not gonna be bullied. She's not gonna be pushed around. She's going to stand firm and get her message out there."
The congresswoman criticized the first daughter for appearing at the G20 summit in Osaka last week.
Sanders, who announced her resignation earlier this month, has been replaced by Stephanie Grisham, a former spokeswoman for first lady Melania Trump.
Kellyanne Conway is the biggest Hatch Act offender, but more than a dozen other Trump administration officials are accused of breaking the federal law.
As spokeswoman for the first lady, Grisham was a loyal defender of Melania Trump.
"It is absurd that this happened," one former member of the White House Correspondents' Association told Newsweek about the planned gathering.
"At this time we're not going to take any questions, but we're hoping to come back to you guys with some more information later today," the chief Pentagon spokesman said.
Stephanie Grisham came out ahead of other current and former administration officials and TV commentators supposedly being considered for White House press secretary.
The pursuit of the truth seemed to be subordinate to the objectives of a few members of the media, who provided ample fodder for the president's constant criticisms of "fake news."
"She was even caught red-handed by Robert Mueller himself," the host said.
"By the end she wasn't really a press secretary," a reporter opined. "She was a top adviser who Trump consulted on just about everything."
"I'm sorry?" Sanders said when asked if Trump told aides to deny he trailed Biden in polls. "Again, I'm not worried about polling."
"I can tell you we're monitoring the situation and continue to stay focused on our ultimate goal which is denuclearization," the White House press secretary said.
Trump fired back at Tillerson Thursday after the former secretary of state reportedly criticized the president's preparations for a meeting with Vladimir Putin.
"It turns out we have more than enough (supporters) to keep us cooking," Red Hen co-owner Stephanie Wilkinson wrote.
"Democrats only disgrace and humiliate themselves with their baseless attacks on such a fine public servant," Sanders tweeted.
The White House Correspondents' Association promotes "excellence in journalism" to ensure "robust news coverage of the president and the presidency."
"Sarah, when will you brief for the real reporters?" a reporter asked the press secretary, who did not answer. She has not held a real press briefing in 45 days.
"Never had somebody say that I should be decapitated," White House press secretary Sarah Sanders said in response to the CNN's analyst's remarks.
This war of words all stems from CNN political analyst April Ryan use of an execution metaphor to discuss firings in the White House's press office.
"Sanders told this Office [of the special counsel] that her reference to hearing from 'countless members of the FBI' was a 'slip of the tongue,'" investigators wrote in the Mueller report.
"Democrats continue to show day in and day out that they're nothing but sore losers," Sanders said.
Despite touting the GOP as "the party of health care," the White House press secretary is the latest Trump administration official unable to outline an alternative to the Affordable Care Act.
"Sanders is not going to want to say something from the podium that might get her hauled into the special counsel's office," Acosta said.
The president spoke out about his belief that the Democratic party had become anti-Jewish while visiting Alabama's tornado victims (and signing bibles). The party, he said, has "become an anti-Jewish party, and that's too bad." Out of the 34 Jewish members of Congress, 32 are Democrats.
"I believe I answered it twice."
White House press secretary Sarah Sanders called the Democrats' investigations into the president and his inner circle "disgraceful and abusive" and a tactic to distract from their "radical agenda."