Sen. Marco RubioMarco RubioColorado GOP Senate race to unseat Dem incumbent is wide open Rubio: I hope I can trust whoever wins with the nuclear codes Rubio faces Trump-like challenger in primary MORE (R-Fla.) on Thursday night took aim at the Democratic presidential candidates, cautioning Iowa voters not to caucus for "socialist" Bernie SandersBernie SandersSanders press secretary leaves campaign RNC strategizes against Clinton VP contenders Dems celebrate anniversary of gay marriage ruling MORE.
Rubio: Sanders a good candidate for president of Sweden
"You will be the first Americans to get to answer the fundamental question about what comes next for this country after seven disastrous years of Barack ObamaBarack ObamaDems celebrate anniversary of gay marriage ruling Cannabis conversation urged at North American Leaders Summit Obama: 'There's still work to do' for gay community MORE. And let me tell you what the answer better not be. It better not be Bernie Sanders," the White House hopeful said during Fox News's GOP debate in Iowa.
"Bernie Sanders is a socialist. I think Bernie Sanders is a good candidate for president — of Sweden," Rubio said to laughter, a line he has repeated on the campaign trail of late.
"We don't want to be Sweden, we want to be the United States of America," he added.
The Florida senator then turned his attention to Democratic front-runner Hillary ClintonHillary Rodham ClintonSanders press secretary leaves campaign RNC strategizes against Clinton VP contenders Analysis: Trump, Clinton plans not in line with balancing national debt MORE, calling her a "liar" over the 2012 attack in Benghazi and chiding her about the controversy over her private email server while serving as secretary of State.
"And Hilary Clinton is disqualified from being the commander in chief of the United States. In fact, one of her first acts as president may very well be to pardon herself," Rubio said.
"And Hillary Clinton lied to those four brave Americans who lost their life in Benghazi," he continued. "And anybody who lies to the families of Americans who have died in the service of this country can never be commander in chief of the United States."