Actually, if this is the kind of hermeneutic you employ, then just about any fanciful thing can be crafted from the text. Using ordinary interpretive principles, the "priest" is wrong (but typically a liberal Catholic.
There is no biblical basis for breaking into a country for financial gain (the excuse used by those crossing the border illegally). There is no analogical justification to say this historical group represents us (or them). And, no the Israelites were not "undocumented immigrants" in Canaan. The land had been given to Abraham 430 years earlier and they were just laying claim to their deed.
I thought it would be obvious that my post was sarcastic. Good grief.