Liberals and conservatives in Congress are doing battle over radio programming for military personnel overseas.

Critics of the Pentagon's American Forces Radio and Television Service (search) say it needs more balanced programming.

They point to the Monday through Friday broadcast of the first hour of conservative Rush Limbaugh's (search) talk radio show.

Democratic Senator Tom Harkin (search) has slipped a provision into the defense bill requesting that the service present "all sides of important public questions."

Harkin says the service offers no commentary to balance what he calls "the extreme right-wing views" that Limbaugh expresses."

Conservatives are determined to get Harkin's measure removed from the bill in July. One House Republican calls the measure "absurd."