Sarah Palin criticized Sen. Marco RubioMarco Antonio RubioOvernight Defense: Tillerson, Trump deny report of rift | Tillerson says he never considered resigning | Trump expresses 'total confidence' in secretary | Rubio asks Army to kick out West Point grad Rubio asks Army to kick out West Point grad with pro-communist posts GOP establishment doubts Bannon’s primary powers MORE (R-Fla.) by name on Monday for the Senate immigration bill. 

Palin, in a lengthy Facebook post, blasts the bill as "amnesty," says it won't secure America's borders and compares the Senate's process toward passing it to Democrats' passage of ObamaCare in 2010.

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She criticized Rubio and other "amnesty suppoters" for opposing an amendment sponsored by Sen. John ThuneJohn Randolph ThuneGun proposal picks up GOP support Overnight Regulation: Senate panel approves driverless car bill | House bill to change joint-employer rule advances | Treasury to withdraw proposed estate tax rule | Feds delaying Obama methane leak rule Dems see Trump as potential ally on gun reform MORE (R-S.D.) that would have required the completion of more of the border fence before illegal immigrants could receive registered provision immigrant status. 

"It's beyond disingenuous for anyone to claim that a vote for this bill is a vote for security," Palin wrote.

"Look no further than the fact that Senator Rubio and amnesty supporters nixed Senator Thune's amendment that required the feds to finally build part of a needed security fence before moving forward on the status of illegal immigrants who've already broken the law to be here," she wrote. "This bill isn’t about fixing problems; it's about amnesty at all costs."

The Monday post comes just hours after she posted an article highlighting Rubio's 2010 comments that an "earned path to citizenship is basically code for amnesty," deriding him as a flip-flopper. The attacks are a sign that should Rubio run for president, she could emerge as a vocal detractor of his campaign.

Palin, now a Fox News contributor who continues to hold sway with conservative activists, warns that the bill will lead to a conservative revolt against both Democrats and centrist Republicans in the 2014 elections.

"As the Senate moves to pass amnesty, the only bright spot in this travesty is the rallying revolution we can look forward to. For just as opposition to Obamacare became a rallying cry for the 2010 midterm elections, opposition to this fundamentally transforming amnesty bill will galvanize the grassroots in next year’s elections," she concludes. "And 2014 is just around the corner."