Here is an effective plan that should enrich your life. Work in the United States as much or as little as you want. Packing plants are a good source of income, and they don't really care if you are an American or not. They hire plenty of people who come from Mexico. The only drawback is they won't pay you much if they know you live in Mexico.
Telemarketing is a good option, too.
They have no standards and don't expect you to stay for more than a week anyway. Most of these companies are so desperate for employees they will hire you back in three months even if you walked off of the job. Do construction in the summer and collect unemployment all winter. A red, white and blue unemployment check will last three times as long in Mexico. Don't worry about the job, it isn't that important.