from your second from the bottom link
Civil penalties under this subsection are in addition to, and not in lieu of, any criminal or other civil penalties that may be imposed.".
you worked for lawyers long enough to understand the difference between criminal and civil. Try to look thru your links and find a criminal charge for being in the US without proper documentation, there isnt one. There is associated charges if you break other criminal laws while here without documentation but of and by itself an alien without proper documentation is not a criminal.
If you dont like that law, write your congress critter.
thanx,
bill