It depends on who you'd go after. A lawyer friend and I have had this discussion and he's been spending some spare time looking for a way to file a lawsuit against the feds for the ongoing invasion.
He says that the funny thing is that with most cases you're looking for evidence of incompetence or liability while in this situation there's so much viable stuff to sue for that it's hard for him to get his arms around it all.
According to him you can't sue the federal government directly so you'd have to sue one of the agencies and you need to show that you were directly affected or damaged by the agency not doing it's job.
Hence it'd have to be filed by someone who had contracted TB from an illegal who came here with the disease and that that could be verified.
My guess is that you'd have to go after ICE and you'd have to demonstrate that by not catching and deporting the infected illegal that you were harmed by contracting the disease.
He says it's only a matter of time before someone files one of these cases and it sticks.
Impressive. Thanks.
I've got to go focus on what feeds me so I'm off for a while.