C'mon Rick Perry.
If you really have presidential ambitions, you're going to have to stand up to -the current- president and literally have the state of Texas defy him and his administration.
That will mean calling out the Texas Rangers, and the state National Guard, and literally "securing" the border on your own, even as Obama tries to order you to stand down.
It's going to take a confrontation of this magnitude to shake the nation to the point where there is enough of an outcry raised on by the citizens of "enough!".
Stand up to Obama, even at the threat of the use of U.S. military troops, and he will be the one who has to back down...