All of the House is up for election and only one third of the Senate. Illegal immigration will be an issue in many of the races. Depending upon the district or state, the challengers will try to use the issue against the incumbent. Both the Senate and the House members have voted with their constituencies in mind. Others like McCain, Hagel, and others see it as an issue for 2008. They are pandering to the growing Hispanic vote.
Here in OC, CA it's hilarious to watch candidates outdo each other with rabid anti-illegal pledges & claims.
An endorsement from Gilchrist is like pure gold!