ABC's reboot of "Roseanne" garnered an average of 18.1 million viewers, according to The Hill. The shirt she actually wore had a much more PG-13 message on it, reading: "And you thought I was a nasty woman before?" In response, Barr wrote that she "created the platform for inclusivity", and was surprised Fishman would "throw [her] under the bus".
On Tuesday, Barr apologised to Mrs Jarrett and pledged to give up Twitter.
"She's known Trump for 30 years like I have", he says.
After deleting the racist tweet that started this whole thing and apologising, Roseanne since claimed her comments were influenced by her use of the prescription sleeping drug Ambien.More news: Cast of 'Roseanne' Might Star in a New Series Without Roseanne Barr
Soon after that, Barr's talent agency dropped her from its client list and Viacom announced rerun episodes of "Roseanne" will no longer be shown on that family of networks. And ABC parent Disney, in the midst of a proposed asset sale with 21st Century Fox, likely has shareholders in mind, experts said.
Both Trump and Barr have been longtime supporters of each other. But after Barr's tweet that likened Jarrett, who is black, to a cross between the Muslim Brotherhood and the "Planet of the Apes," ABC canceled the show in a one-sentence statement from network entertainment president Channing Dungey.
She cited Ambien again in a later tweet, saying, "Not giving excuses for what I did (tweeted) but I've done weird stuff while on ambien - cracked eggs on the wall at 2am etc". Shortly after the show aired in March, it was renewed for a second season.
Earlier that day, she also targeted Chelsea Clinton, tweeting, "Chelsea Soros Clinton", suggesting in another tweet that the former first daughter is in cahoots with liberal businessman George Soros because she married his nephew. "When I read her social media, in the very beginning..."
She eventually said that she would be leaving Twitter amid the criticism, after tweeting, "I apologize to Valerie Jarrett and to all Americans".
Former Obama White House adviser Valerie Jarrett has stayed mostly out of the spotlight after ending her tenure as one of President Barack Obama's most trusted staffers.