Walsh included the hashtag #boycottShowtime on his series of tweets, while Palin asked Baron Cohen and Showtime to donate the proceeds from the show "to a charitable group that actually respects and supports American Vets".
Who Is America? premieres Sunday, July 15 at 10/9c on Showtime.
In a letter Sacha a.k.a. Dr. Ruddick (the character Sarah claims was dressed as a Vet) addressed Sarah by saying "I did NOT say I was a war Vet".
Ruddick claims he never presented himself as a former member of the US military (he was, in fact, a part of the United Parcel Service), that he was unable to serve his country (following the discovery of bone spurs in his "testies"), and that Palin may have been hit by a "bullshit grenade".
"Ruddick, a totally real individual who only joined Twitter back in April, went on to tell Palin he "[has] always admired you for TELLING THE TRUTH about Obama's birth certificate and the location of Russian Federation.
"You used to hunt the most risky animals in the country, like wolves and people on welfare", the statement concluded.
The comedian retweeted a new Twitter account that's apparently his new "citizen journalist" character, "Billy Wayne Ruddick Jr., PhD". I DEMAND and APOLOGY'.
Following the dupe, Palin claims Cohen's production team capped things off by dropping she and her teen daughter, Piper, at the wrong airport - knowing they could not get a return flight home to Alaska.
A source close to Palin told People: "The request was very sophisticated and looked legit".
But unlike Palin and former Alabama judge Roy Moore, Koppel seemed unfazed by the incident.
According to Moore, it happened in Washington D.C. where he was on all all-expenses trip to receive an award on the occasion of Israel's birthday.
Moore concluded in the statement that he wouldn't hesitate to take legal action against Cohen and other directors of his show if the opportunity presents itself.
He also punked Cheney and duped Bernie Sanders.