It's not that there are a lot of Mexicans who are gardeners or in landscaping, it's that everywhere in America whichever the prevalent low-income minority will hold that job. In north Florida it's mostly rednecks who hold the gardening/landscaping jobs. In south Florida it's a lot of Latinos.
California and Texas are both big, populous states and therefore would likely have a lot of Mexicans into gardening/landscaping and that likely perpetuated that stereotype so heavily. I imagine it's probably a lot of black people in MS and AL doing those jobs. It's a job that attracts hard-working low-income minorities, but that is unfortunately true for any other job that requires a lot of hard work in rough conditions. It doesn't matter what talent or skills they may have, they are forced to work those jobs just to stay alive and to feed a family.
Years ago, I was shocked to find out that a guy from Asia who had a doctorate was doing construction work because his doctorate does not apply here in the States and so therefore he had to go to school and get his Ph.D. again, but still had to feed his family somehow.
Correct. That applies to medical doctors, too. Depends on hospital policy, If you have received an education from another country, you will be required to take medical exam and English exam before you take a job.
Many Americans don't realize that Mexicans already lived in California, Arizona, New Mexico and Texas before they became the US states. There are Spanish name cities. They chose to speak Spanish and keep the culture alive.
I attended a private school in Mexico. The environment was very different. In my private school, they usually ask you what your name is
and where you came from before they speak your language.
It was my very first semester at the US public high school as a senior after I moved to San Diego from Mexico. The transition was hard at first, but it got better quickly. They don't ask a question like that. In my class, it was very interesting experience. We worked on a project as a group. A Mexican-American student just started to speak Spanish out of the blue to other student. The other student was like, "What? I don't speak Spanish."
A Mexican-American student was confused, "I thought you know Spanish."
"Why do you think I know Spanish?"
"You look Mexican. Are you from Panama?"
"No, I'm a Pala Indian." She laughed. She often was mistaken for looking Mexican or Central American.
I asked Mexican-American if she had been to D.F. She was like, "What is D.F.?" I had to change my line and asked her again. "Have you been to Mexico City?" She naturally said no. She had never been to Mexico except Tijuana. She grew up in San Diego all her life. I still refer Mexico City as D.F. It's hard for me to break my habit.