Sen. Marco RubioMarco RubioWhat Trump's Cabinet picks reveal House passes water bill with Flint aid, drought relief What the 2016 election can tell us about 2018 midterms MORE (R-Fla.) faced hecklers angry with his leadership on immigration reform at a Friday Tea Party summit in his home state.
The Florida senator joined a handful of other potential 2016 Republican presidential contenders, including Texas Gov. Rick Perry and Louisiana Gov. Bobby Jindal, at the summit on Friday. Texas Sen. Ted CruzTed CruzFiorina to meet with Trump on Monday Trump picks Goldman Sachs chief for top economic adviser: report The Hill's 12:30 Report MORE will keynote Saturday's closing session.
Rubio didn't once mention immigration reform during his speech, focusing instead on themes of limited government and criticism of Obama's policies, most prominently his healthcare law.
But his position as one of the chief architects of the immigration reform measure that passed the Senate earlier this year has drawn fierce criticism from conservatives, some of whom say he has sold out since getting elected to the Senate with Tea Party support.
Of particular concern to conservatives is the portion of the law that would create a pathway to citizenship for illegal immigrants currently living in the U.S., as well as what some conservatives believe to be too-lax border security provisions.
Republicans in the House have said the Senate version of the bill is a non-starter.
Since taking a prominent role in the immigration reform debate, Rubio has sought to pivot back to the right to shore up some of the support among conservatives that eroded during that fight.
He's one of a handful of conservative senators leading the push to defund ObamaCare, and on Friday pledged to oppose any budget that provides funding for the law.
“I will not vote for any short-term budget that spends one single cent on ObamaCare,” Rubio said to cheers, according to Reuters. “I will not vote to raise the debt limit unless it comes with a balanced budget amendment.”