From President Obama to Hillary Clinton to its own party members, no one was safe at the GOP’s unofficial kickoff to the 2016 election cycle.

Saturday’s Iowa Freedom Summit featured a who’s who of the GOP, and few minced words when it came to policy or fellow politicians, including, surprisingly possible Republican nominees for president next year.

Donald Trump took aim at Mitt Romney, saying he “chocked” in the 2012 election. Former Florida Gov. Jeb Bush didn’t stand a chance with Trump, either.

“The last thing we need is another Bush,” said Trump, according to ABC News.

Other speakers joined Trump in criticizing Bush’s support of Common Core education. Romney’s policies came under fire, too; though he didn’t name him, Former Virginia Gov. Jim Gilmore clearly blasted Romney’s flip against Obamacare after he enacted a state-controlled health care program in Massachusetts.

Gilmore also ridiculed potential 2016 presidential candidate and New Jersey Gov. Chris Christie for hugging President Obama after Hurricane Sandy, a few weeks before the 2012 election.Of course, Obama and Clinton, another likely 2016 candidate, weren’t safe from the GOP speakers. “Hey Iowa, can anyone stop Hillary? To borrow a phrase, yes, we can!” said Sarah Palin, according to Fox News.

Palin also shamed the GOP establishment and called for the party to fly “bold, conservative colors, not establishment pale pastels.”

Wisconsin Gov. Scott Walker took even more jabs at current party policymakers. Walker, who may run for president in 2016, said his leadership is “new and fresh and bold and aggressive that has been proven.” He detailed his budget-cutting habits, a clear attempt to separate himself from wealthier candidates like Bush and Romney.

Former speaker of the New Hampshire House of Representatives Bill O’Brien had possibly the best line of the day, saying Romney should not be the candidate of choice.

“What is worse, nominating someone merely because he’s been nominated twice before or nominating a liberal supporter of Common Core because he has a familiar name?” he posed.