The text of Alabama HB 56 is here:
http://latindispatch.com/2011/06/09/text-of-alabama-immigration-law-hb-56/
The archbishop might have a point, as it is illegal for anyone to conceal or transport a known illegal alien.
Generally speaking, I wish my church would use its influence and money to better conditions in Latin America, rather than to invite the population of Latin America into the US. Perhaps the Church feels powerless to fight the corruption there.
That is what Federal Law already says though.