If this were the policy that was chosen, it would be very interesting to contemplate the dis-satisfaction amongst the hardliners, such as yourself, with the pace of implementation of enforcement or the effectiveness/ineffectiveness, in preventing illegal entry, the added enforcement might have at any particular time during the gradual implementation. In other words, an enforcement only solution will not satisfy you.
Says who? How quickly did the TSA come into existence, with its 60,000 employees? Virtually overnight. And this was building a department from scratch, not simply adding on to an existing department. All it takes is political will.
'Enforcement only solution'? Hmmm... Where have I heard that now? It was LULAC, La Raza, or the Mexican government. The only alternative to 'enforcement only' is to address the root cause, which is the Mexican Goverenment. Would you like to invade Mexico, Ben?