Building a border fence would help.
To keep the cows out???
Not really. You’d need a ceiling, too.
“Legal immigrants over the age of 15 must have a chest x-ray upon entry to check for tuberculosis “.[36][37]
Illegal aliens are not screened in this manner. According to Dr. Lee Reichman, “Unless Americans are willing to adopt suffocatingly draconian immigration policies, the likelihood is that with globalization TB will again become epidemic here, in the same way that HIV moved from Africa to take root throughout the world. Suffering does not localize. When we engage with the world, we engage, inescapably and absolutely, with the world’s infections. And the most devastating infection in the world is not Ebola or Lyme disease, West Nile virus or even HIV, but tuberculosis.”[38]
“One individual in central California, an illegal immigrant from Mexico, was responsible for infecting at least 56 other people before he was incarcerated for forced treatment earlier this year. In 1996, the John Hopkins Center for Tuberculosis Research estimated it cost $13,000 to treat each case of TB. That means it cost U.S. taxpayers $741,000 in 1996 dollars to stem the epidemic caused by a single illegal immigrant. About 53 percent of the people diagnosed in the United States each year with TB are born outside the U.S. In the Los Angeles area, 80 percent of people infected with TB are foreign-born, with Mexico leading the way, followed by the Philippines, Vietnam, India and China.”[32]
Dr. Madelein Cosman concurs, but points out that other diseases are also an issue, “many illegal aliens harbor fatal diseases that American medicine fought and vanquished long ago, such as drug-resistant tuberculosis, malaria, leprosy, plague, polio, dengue fever, and Chagas disease,”[39]