It is similarly important to understand the evolution of US legislation on immigration since the 1920’s, and the shifts and hypocrisy involved in the application of those laws. For example, the 1996 immigration reforms implemented by the Clinton administration, along with other, underlying structural trends, halted the traditional circular pattern whereby Mexicans came and went to the US every year.
同样重要的是理解自二十世纪二十年代以来美国移民立法上的变迁以及在执行这些法律上的变化和伪善。例如，由克林顿政府在1996年实行的移民改革与其他基本的结构性趋势一样停止了墨西哥人传统上每年往返美国的循环模式。相反，他们开始远离边界社区，从而大幅度增加了美国的墨西哥人数量。