Because Title IX requires that. Whereas the SCOTUS has repeatedly made it clear that immigration enforcement is a function of the federal government, not the states or city governments. Why did they do that? Because the 10th Amendment is pretty clear. “The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.” Per Scalia, the federal government “may neither issue directives requiring the States to address particular problems, nor command the States’ officers, or those of their political subdivisions, to administer or enforce a federal regulatory program.” So, it’s pretty clear that the federal government can’t withhold funding for a thing the states can’t be compelled to do. Sent from my iPhone using Tapatalk