(THE HILL) Sen. Marco Rubio is rallying conservatives behind immigration reform with a set of principles he unveiled this week and has promoted with a media blitz.

Proponents of comprehensive immigration reform, who mainly reside on the left, are surprised that Rubio, a Republican from Florida, has generated so much positive buzz from conservatives.

They see it as a promising sign that 2013 will be a more promising year for immigration reform than 2006 and 2007, which both began with high hopes that fizzled after a stalemate in Congress.

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