Nowhere in scripture are we told that it is permissible to break laws simply because we disagree with them on other than biblical grounds. I don't know of any commands given by Jesus Christ (or by Moses in the case of Jews) which can not be obeyed while still obeying US immigration laws. AFAIK there are no current US or state laws which prohibit providing humanitarian aid such as food, drink, shelter, or clothing to illegal immigrants by an individual or an organization.
But there are laws which prohibit hiring illegal aliens and against aiding them in committing the crime of illegal entry into the nation's borders. Any employer of illegals or any person or organization which aids and abets illegal entry is breaking both government law and God's command to obey the lawful authority of the government.
For me there are no gray areas in this matter. Christians are commanded to obey the laws of our land unless those laws conflict with the laws and commands of God as given in his word.
If providing a hot meal to an illegal alien becomes a felony, will you obey Caesar's law or God's law?
Matthew 25"Then he will say to those on his left, 'Depart from me, you who are cursed, into the eternal fire prepared for the devil and his angels.
For I was hungry and you gave me nothing to eat, I was thirsty and you gave me nothing to drink,
I was a stranger and you did not invite me in, I needed clothes and you did not clothe me, I was sick and in prison and you did not look after me.'
"They also will answer, 'Lord, when did we see you hungry or thirsty or a stranger or needing clothes or sick or in prison, and did not help you?'
"He will reply, 'I tell you the truth, whatever you did not do for one of the least of these, you did not do for me.' "Then they will go away to eternal punishment, but the righteous to eternal life."