Jon Stewart has spent the past several years as one of the most vocal advocates for first responders who suffered medical complications after the September 11, 2001 terrorist attacks, and he has now taken that experience to support military veterans who became sick from exposure to toxic "burn pits" in Iraq and Afghanistan.

On Tuesday, the former Daily Show host told Fox News' Martha MacCallum that he is urging Congress to act quickly on this issue, saying that the cost should not be a factor. He also joined several members of Congress at a press conference.

Stewart explained to MacCallum how the burn pits operated, exposing the soldiers who were living and working nearby to toxic fumes 24/7, with a number of them contracting serious illnesses and even cancers.

Arguing that these veterans shouldn’t have to keep fighting the bureaucracy, Stewart acknowledged that the issue was "going to come down to money," but in his view, "this is the cost of war."

“Veterans are human beings," said Stewart pointedly. "They’re not just flags, they’re not just bumper stickers, they’re human beings.” He's absolutely right.

Stewart is using his celebrity for a good cause, bringing his star power to support men and women who have made great sacrifices when our country needed their service. He's a winner, and a patriot.

The furor over Tucker Carlson's comments about "replacement theory" has barely died down but the Fox News host is tossing a new source of fuel on the fire, openly questioning whether the coronavirus vaccines actually work. 

Carlson spent several minutes on his show Tuesday night engaging in baseless speculation, suggesting to his millions of viewers that the reason public health officials are still advising vaccinated people to be cautious is that the vaccines might not actually work.

"If the vaccine is effective, there is no reason for people who have received the vaccine to wear masks or avoid physical contact," he said. "So maybe it doesn’t work and they’re simply not telling you that."

Dr. Anthony Fauci dismissed Carlson's comments as "just a typical crazy conspiracy theory," and pointed to the "overwhelming" data from the clinical trials supporting the vaccines' effectiveness. The hosts of The View pummeled Carlson as peddling "irresponsible" "misinformation."

Mediaite's Aidan McLaughlin assessed Carlson's conclusion that vaccines don't work as just flat-out "wrong," noting that we have real world studies proving they do.

"Carlson is not just scrutinizing vaccines," wrote McLaughlin. "He is weaving an insane conspiracy theory that they (the nameless enemy) are lying to you (the petrified viewer) about their effectiveness."

Competing with Tomi Lahren for most ridiculous conspiracy peddler isn't a good look.