Despite frequent attempts to staunch immigration from the south or divert it into legal channels, the supply of Mexican labour has continued to find ways to get in touch with American demand.

• 尽管美国政府多次想阻止墨西哥移民，或者让移民通过合法途径入境，但墨西哥人仍然不断想方设法满足美国人的劳动力需求。