Yes, it's time to fix the problem......time to control our borders.... But.....in the meantime, do we want anybody (Americans, legal aliens, illegal aliens, foreign visitors,...pets, cows,...) roaming our neighborhoods with diseases like MDR=TB, SARS, Hepatitis A, B & C, tuberculosis, leprosy and Chagas Diseasebird flu, AIDS, mad cow disease, etc? Illegals shop in the same stores that we do, walk the same streets that we do...live in a canyon and alley near us.... That scenario can be much more dangerous and costly than $1 billion. Yes? No? If No, then ignore this post.
Additionally........They prepare our food in restaurants (we just don't see them in the back of the kitchen)....OR.....They work for Tyson's Food preparing the chickens meat that is sold at our grocery stores.
These two methodologies would very efficient in disseminating diseases from infected individuals to the population in general.