"The University and UCPD are at fault," said Berkeley College Republicans President Troy Worden.
University officials said there is there is no secure venue for Coulter to speak on campus Thursday. She rejected the University's May 2nd alternative.
"In no one's memory here has so much time been spent with a single student group trying to make an event work," said UC Berkeley Spokesperson Dan Mogulof.
RELATED: Ann Coulter speech at UC Berkeley is off
Wednesday, Young America's Foundation, one of the organizations that invited Coulter, said it would not jeopardize the safety of its staff or students.
Coulter tweeted, "I'm so sorry Berkeley canceled my speech. I'm so sorry YAF acquiesced in the cancelation. And I'm so sorry for free speech crushed by thugs."
"She has a right to her opinions but it is UC Berkeley that canceled this speech," said Attorney Harmeet Dhillon.
Dhillon is representing Berkeley College Republicans and Young America's Foundation in a lawsuit against UC Berkeley officials and campus police officials.
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"The lawsuit is not about Ann Coulter, Ann Coulter was simply the catalyst and the straw that broke the camel's back on free speech here at UC Berkeley," said Dhillon.
PHOTOS: Protests erupt at UC Berkeley's Milo Yiannopoulos event
The Founder and Co-President of a third non-partisan group that invited Coulter says things went sour between his group "BridgeUSA" and Berkeley College Republicans. "BridgeUSA" is not a plaintiff in the lawsuit.
"There was immediately a divide between us and the conservative groups organizing this. While we wanted the facilitation of dialogue they wanted provocation," said "BridgeUSA" President Pranav Jandhyalo.
"Threatening violence does not change minds & instigating controversy for publicity does not fix a broken system." - BridgeUSA @UCBerkeley— Melanie Woodrow (@MelanieWoodrow) April 27, 2017
"I don't believe freedom of speech is a partisan issue," said Naweed Tahmas with Berkeley College Republicans.
Still, both "BridgeUSA" and Berkeley College Republicans say they welcome Coulter's visit in the future.
"If Ann Coulter is willing to come to UC Berkeley the invitation is open," said Worden.
"All eyes are on us right now and if she comes back all eyes are going to be on us again," said Jandhyalo.
Here's a look at Ann Coulter's reaction tweets from today:
I’m so sorry Berkeley canceled my speech. I’m so sorry YAF acquiesced in the cancelation. And I'm so sorry for free speech crushed by thugs.— Ann Coulter (@AnnCoulter) April 26, 2017
I’m so sorry Berkeley had a different story every 20 minutes, which always was: No speech.— Ann Coulter (@AnnCoulter) April 26, 2017
If we had continued to fight we would have won.— Ann Coulter (@AnnCoulter) April 26, 2017
I’m very sad about Berkeley's cancelation, but my sadness is greater than that. It is a dark day for free speech in America.— Ann Coulter (@AnnCoulter) April 26, 2017
It’s sickening when a radical thuggish institution like Berkeley can so easily snuff out the cherished American right to free speech.— Ann Coulter (@AnnCoulter) April 26, 2017
I am so grateful to people like Bill Maher, Chris Matthews and Margaret Carlson for opposing Berkeley’s censorship.— Ann Coulter (@AnnCoulter) April 26, 2017
Here's a look at the Young America's Foundation reaction tweets from today:
UPDATE on YAF/Berkeley: "YAF did not capitulate to the Left or run from anything, in fact our students are there everyday...— YAF (@yaf) April 26, 2017
…UC-Berkeley blocked every effort to provide a venue required to sponsor an educational event with Berkeley students...— YAF (@yaf) April 26, 2017
…At no time was there ever a space or lecture time confirmed for Ann Coulter to speak...— YAF (@yaf) April 26, 2017
…Conservatives shouldn’t be relegated to speaking outside under the threat of violence when liberals are given venues anytime they wish...— YAF (@yaf) April 26, 2017
…The Coulter event was never scheduled to be a stroll through Sproul Plaza...— YAF (@yaf) April 26, 2017
…It was designed to be a normal campus lecture where we had the chance to share conservative ideas with interested students...— YAF (@yaf) April 26, 2017
…Berkeley had six weeks to lock in a room, but chose not to do so. If we had a hall, or even a room, we would have proceeded...— YAF (@yaf) April 26, 2017
…We didn’t run or capitulate, we stepped up and sued Berkeley...— YAF (@yaf) April 26, 2017
…We paid for Coulter to deliver a lecture, not just give a brief speech among violent protestors...— YAF (@yaf) April 26, 2017
…We are moving ahead with our lawsuit to protect students’ First Amendment rights...— YAF (@yaf) April 26, 2017
…and ensure future conservative speakers do not face these obstacles when speaking at Berkeley."— YAF (@yaf) April 26, 2017