"We can fix the border, together."
I agree. But that "together" means some input from the feds, not just the BLM or forest service, which is all the help offered so far.
The answer may not be the governments problem to solve properly. This is America, a capitalist, competition based economy. Why not allow bidding to occur on contracts to defend the border. Private companies provide all kinds of military support to our government, the range of power to enforce the border would require strict controls against conflict with local, State, and Federal law enforcement.