On Thursday, Sadler attempted to make a joke about Senator John McCain's opposition to Central Intelligence Agency nominee Gina Haspel by saying "he's dying anyway", an attempt at humor that reportedly "fell flat".
Sanders, who has not denied the account of the joke, said in a press briefing Friday that the administration has "respect for all Americans", but would not apologize for the remarks - even when a reporter asked directly why she hadn't.
Cindy McCain, the senator's wife, fired back on Twitter on Thursday, reminding Sadler of the human side of politics.
"We respect Sen. McCain's service to our nation, and he and his family are in our prayers during this hard time", the White House said in a statement.
At the center of the debacle were remarks from Kelly Sadler, a special assistant in the White House, who reportedly took issue with McCain's opposition to Gina Haspel, the Trump administration's nominee for Central Intelligence Agency director.
White House strategic communications director Mercedes Schlapp spoke up during the session to defend Sadler, one of the sources said. John McCain as the Arizona Republican battles brain cancer, calling him "a hero" who "dedicated his life to public service" and saying that his "thoughts and prayers" are with him and his family.
"The thing that surprises me most is, I don't understand what kind of environment you're in where that's acceptable and you can come into work the next day and still have a job".
"God bless John McCain, and for what he's meant for our country, and what he has meant to all of us", Kasich said.
A FOX Business spokesperson confirmed to ABC News that McInerney will no longer be invited to appear as a guest on either FOX Business Network or FOX News Channel.
The 81-year-old Arizona Republican, who has spent three decades in the Senate, was diagnosed in July with glioblastoma, an aggressive brain cancer.
As for the president, he and McCain have had a troubled relationship.
The confirmation vote for Haspel could be close. This has left him in a bad state and he sought the comfort of his family and friends at his personal estate for the past few months.
"I feel people are taking advantage of a guy who is an American hero", said MacDonald, who served during Desert Storm.
A report by CNN showed Haspel, an agent with the Central Intelligence Agency and a nominee for the Trump Administration, has a history of waterboarding and torture during her tenure in the Bush Administration.
McCain says some of the tactics used were torture.