The “sanctuary city” of Chicago has been flooded with President Joe Biden’s illegal aliens, and along with that flood has come a potentially deadly disease. On Wednesday, Chicago health officials confirmed that tuberculosis has been discovered among the illegal border crossers being housed by the city for free in its “migrant shelters,” WFLD-TV reported. Officials said “a small number of cases” have been found in “a few different shelters,” without specifying how many. As the Centers for Disease Control and Prevention notes, TB can be fatal and is spread through the air. The CDC further says t…