Why lawyers love illegal immigrants!

What a bonanza for lawyers Australia wide.  Apparently there are enough illegal immigrants suing the government for mistreatment, to keep them in clover for years.  Of course it's the taxpayer who foots the bill because they can all claim legal aid.  I would like to know if they will also be suing their country of origin for the claims that they were persecuted and forced to flee?   Or maybe the Aussie taxpayers can sue these countries for the costs accrued by our government.