Several groups are using the Congressional recess to advocate on immigration.

They represent the disparate interests of illegal immigrants, conservative Americans, and corporations, demonstrating the challenge of passing a bill that satisfies all sides.

The first effort is from a coalition of immigrant-rights groups that is trying to stop Congress from increasing funding for border security.

The Fair Immigration Reform Movement is holding a conference call with reporters Tuesday morning to argue that the focus should be on legalizing the 12 million illegal immigrants already here instead.

Conservative lawmaker Lamar Alexander (R-Tenn.) planned a counter media blitz for Tuesday afternoon to talk about birthright citizenship .

The lawmaker favors taking citizenship away from the children of illegal immigrants and believes it can be achieved without altering the Constitution.

The pro-business U.S. Chamber of Commerce plans to hold a meeting Wednesday to focus on high-skilled immigration to the U.S., an issue that many advocates say has been overshadowed by the illegal migrants debate.

The Chamber favors an open immigration policy that allows U.S.-based companies to recruit talent worldwide.

-- Ambreen Ali, Congress.org