The only reason we should be deporting illegal immigrants is because they are here illegally and for no other reason. If establishing priority for deporting illegals is because they run afoul of the law, then this is acceptable, but only if they are deported only because they are here illegally, and only after they are charged and tried for other crimes they may have committed to come under scrutiny by law enforcement.

But in the end, we are up against the vast corruption of sanctuary administered law enforcement. Nobody who is here illegally should ever imagine that they are immune from being seized and deported, ever. Law enforcement should always be on the lookout for illegal immigrants and move to have them deported in an instant at any occasion.