Ok since if know how many are here after having crossed the border illegally you probably also know how many have come here over the years and overstayed their visas. I've heard it from multiple sources of media from all sides of the spectrum. Even Fox News used to complain about how many are here with expired visas but that doesn't fit their narrative for the wall now so they don't mention it anymore. I couldn't begin to tell how many of either kind of folks are here and I'm pretty sure NO one can.