Al was responding to someone who was insinuating that distrust of medicine (doctors, generally) was the result of aggressive law enforcement. The strong implication was we should do something about the reluctance of people to seek medical care because of their immigration status or outstanding warrants. That means reducing enforcement of various laws. That's what Al was responding to.
The possible variations are:
1. Stop enforcing immigration laws and checking immigration status except in very narrow cases.
2. Stop trying to apprehend people with open warrants.
3. Decriminalize some stuff that's criminal so that fewer people have warrants.
Maybe I've got blinders on, but I think hardly anyone agrees with option 2 in general. And I think almost everyone, other than "Get off my lawn" suburbanites, agrees with option 3. Too much minor shit is illegal. But I also think those are minor compared to the first issue.
That leaves the issue of illegal immigrants and their reluctance to have any contact with authorities, including medical services, which is why Al went on tilt. Unless you either refuse to enforce immigration laws, or make them officially legal immigrants, both of which are equivalent to an open borders policy, they are going to remain fearful of seeking medical treatment and the problem remains.