they skipped a step to start with. they did not enter legally through a port and be processed as specified under existing laws. therefore, they are illegal and have no standing and can be deported without further legal action or interpretation.
nobody is opposed to immigration, but everybody (including - maybe especially - you, counsellor) should be strong proponents of legal entry for legitimate reasons.
not closed borders, but controlled borders. it's called "sovereignty". without it, there is no country.
unless, of course, you have some insidious agenda......