He gets part of the blame, but Congress gets most of the blame.
Check out what Chuck Hagel is trying to pull. His bill is endorsed by MALDEF.
http://www.freerepublic.com/focus/f-news/1326171/posts
Rohrabacher appears to be doing something:
Rep. Rohrabacher says simply enough, "We are talking about huge sums of money--not just for retirement, but for disability payments, premature deaths, caring for the families of illegal immigrants", adding that "it is an outrageous violation of our obligation to watch out for senior citizens of the United States."
Wisely, he calls for "a law specifically banning work by illegal aliens from qualifying for Social Security." Indeed, he has a bill--HR 1631--to prohibit the work histories of non-citizens who are here illegally from being counted toward Social Security earnings." If HR 1631 doesn’t become law, millions of illegal aliens, if yet another amnesty is granted, will become part of the Social Security system because all the time they worked here illegally will be credited to their accounts.