[rmnunez]

I'm with compu, its impossible to guarantee not a single alien could sneak in, but maybe better control could be exercised over how and where they cross. Using the drones over Arizona would be a good idea as it would discourage crossings in these arid areas which are dangerous. My naswer is an easier and swifter visa process that contemplates a differentiated status for seasonal or temporary working Mexican non-immigrants. What previously would be "undocumenteds" would become seasonal or temporary non-immigrants for a negotiated fixed period. This would have to involve a periodic and much higher allocation of temporary residence and work permits for Mexicans. It is well-known substantial numbers of Mexicans, some calculate up to a million of them, cross into Mexico from the US regularly at least once a year. There are likely twice as many who don't try for fear of having to go through the border crossing ordeal again. The illegality of undocumented border crossings also fosters a whole criminal environment that supports smuggling of goods, people and probably involves drugs too. If the US simply seasonally alocated half a million temporary non-immigrant working permits for Mexicans, the undocumented problem would largely disappear. The US could condition the issuance of whatever number of such permits to the eventual repatriation of the beneficiaries.

The US is missing the boat here big time. Mexico just granted Mexicans the right to vote from the US, these are 20 to 25 million of the people who live in the US, they are almost 70% of the US' hispanics and will be about 25% of that country within 5 years. The Mexicans will eventually govern the US, they are rapidly climbing the social scale and increasingly found at the highest levels of government. The US cannot effectively remove all undocumented aliens and by shutting them out denying drivers licenses or public education for their children these people are alienated when the country ought to be trying to lure them into the social system there rather than leave that to the remote Mexican government.