You cannot provide with a single act by an illegal alien that has compromised national security.
Before you answer, name me a time in the history of the nation when people did not routinely cross the border illegaly.
Actually, for most of US history, it was rather difficult to enter illegally, since most everyone but the diseased and criminals were let in prior to 1924, when the door was shut on Asians mostly. And prior to 1964, most everyone from the Western Hemisphere, including all those Mexicans, were allowed to enter legally. The tension post 1964 came from the population explosion in Mexico, which explosion is now over. But folks enjoy fighting the last war.