The keys then become:
1) Implementing policies discouraging them from doing so at the societal level
and
2) Implementing force behind those policies at the personal and societal level
DHS isn't getting paid right now because Kristi "Dog Shooter" Noem managed to screw up so badly that even Congressional Republicans under Trump don't want to own her agency's behavior and carved DHS out of the normal funding bill. There's still a chance for #1 to be achieved. #2 remains to be seen at the societal level, but you can start working on that yourself for the personal level.