How do you think they become multi-millionaires in the first place? Exploiting whoever they can when they can, and in this case, an illegal alien! Illegal nannies, housekeepers, lawn maintenance, etc. help the wealthy keep money in their pockets while we, the taxpayers, supplement them with our tax dollars.
It isn't only the businesses that cheat and hire illegal aliens that increase the money in their pockets, people do this in their homes too! Politicians do it too!
How The Rich Exploit Undocumented Domestic Workers
Some don't like this source, but they use a PEW survey and 22% of domestic workers (breaks down business/private homes, etc) are illegal aliens, traditionally this work was done by lesser educated Americans or those trapped in the larger cities by their economic conditions.
http://www.breitbart.com/big-governm...al-immigrants/
Keep in mind that many of those who support illegal immigration do so to put extra money in their own pockets!