The video shows Stewart, who had been in D.C. to advocate in favor of the Honoring Our PACT Act, telling Posobiec he was a "troll" and that he wasn't "in good faith" reports said.
Posobiec is a well-known, far-right television anchor who was formerly an associate of ex-Trump strategist Steve Bannon, Daily Beast said.
The Honoring Our PACT Act would provide health benefits to veterans who were exposed to burn pit toxins, Daily Beast reported.
After Stewart calmed down from the dispute, Posobiec said, in a video posted to Twitter, that he and Stewart had reached an agreement about helping veterans.
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