You, and everyone else, can read HR 4437 here:
http://www.govtrack.us/congress/billtext.xpd?bill=h109-4437
Please guarantee that the following will NOT be used against a Christian shelter offering food and a roof over your head, regardless of immigration status:
". . . assists, encourages, directs, or induces a person to reside in or remain in the United States, or to attempt to reside in or remain in the United States, knowing or in reckless disregard of the fact that such person is an alien who lacks lawful authority to reside in or remain in the United States"
Why would it so long as you are also assisting the person in complying with the immigration laws of these United States? You shouldn't take the law into your own hands, you know.