Mexicans in the Landscaping Industry

After talking in class about immigrants and Mexican landscapers, I have been reflecting on this subject quite a bit. I worked in the landscaping industry for almost 3 years, and part of my job was to help the Mexicans fill out their paperwork and apply for visas, etc. My experiences there showed me that these individuals are willing to work hard for their money. Many of them come to the United States on a work visa, meaning that they are only allowed to live here during the months that they are needed for work. Because of this, many of them leave their families in Mexico to come here and make money, which they then send home to their loved ones. Sometimes I think that people in America expect opportunities simply because they live here, but these individuals are truly grateful for the opportunity to come here and make minimum wage just to provide for their families, in the hopes that one day they may be able to live here. Another thing that I noticed, was that when we hired white individuals they were much less reliable, as a whole, than the Mexican employees we had. For the whites, it was just another job; they didn't necessarily like it, they didn't take much pride in their work, they simply came because they wanted a paycheck. The Mexican employees that we had, however, were quite the opposite. They took a lot of pride in what they did, knowing that what they were doing was making all the difference in the world to their loved ones back in Mexico. They were grateful for the opportunity to make money here. I think that a lot of people don't necessarily see it from this perspective. Instead, they think of Mexicans as taking a job away from them. Based on my experiences, however, I do not feel that this is the case. Any thoughts?