There is evidence that it is more than just “perceived” motivation. Even CBS, of all places, is reporting that the Pope has followed the lead of many US Cardinals in pushing for more open borders:
http://cbs4denver.com/local/tancredo.pope.immigration.2.703118.html
Also see Michelle Malkin’s write-up that I posted earlier.
Some may say Tancredo acts on knee-jerk reactions. Others say he fearlessly hits issues head-on. I agree that attacking the substance without attacking the Pope himself might have been the most prudent way to do it.