Wayne Cornelius, director of the Center for Comparative Immigration Studies at the University of California at San Diego, is a quote source I've seen occasionally. In case you see him being presented as in any way impartial or not partisan, could you please send the reporter the following quote he gave to the CSM?

"[The recent focus on immigration matters is] mainly because of a strategic choice made by the Republican Congressional leadership to make immigration their party's wedge issue du jour for this election year... Exploiting anti-immigration hostility is ... an effective and efficient way to mobilize their base."

The quote is from the generally unremarkable article "Why illegal immigration is one of the hot topics of 2006".