I wouldn't kill anyone for the "right amount of money". So that was a pretty easy statement to refute.
Somehow the Mexicans miraculously don't consume at all while they are here, pay sales taxes on the consumption, and unknowingly contribute to a local economy right? Yes, a minimal amount commit crimes, they should be prosecuted like anyone who commits a crime. Yes, a small percentage steal welfare, they should be prosecuted with the same people that slug our welfare.
If you look at the work a good percentage of Mexicans do it is laborious work that ends up contributing to the US infrastructure and further enhances our national economy. Now if you use a multiplier and see how that translates in comparison to what they send back to their country, (which will probably be used to purchase US goods indirectly in Mexico) it far outweighs it.
Also the US is the biggest investor in Mexico. So if these "low ballin" Mexicans were to accept China as their primary investor, it would have a detrimental effect on our economy. Want to hear the most ironic thing about your post? The US actually low balls Mexico on a MUCH larger scale with agricultural products that only further the gap between fair trade. It's a good thing for the US that Mexico doesn't have a very good education system, especially about economics, or else they may realize what the US has gotten away with over the past 50-60 years.
I suggest you take a look at the bigger picture instead of spouting these uneducated ramblings that you pick up in biased/racist banter. This goes for many posts in the thread. Obviously there has to be some limit on population immigration to maintain a system order, but building a big fence off and isolating our country is going to help stagnante the economy.