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" An immigration system that forces people into the shadows of our society , or leaves them prey to criminals is a system that needs to be changed , " Bush said at the National Catholic Prayer Breakfast . Economic conditions and attitudes about race have certainly changed , but these changes are complex , and there is no reason to believe that the net effect of these changes is to make social assimilation and success easier today for Mexican Americans than in the past . The technological applications which have completely changed our daily lives were all based on the results of basic research but , in many cases , these results were considered completely useless at the time . Pam Young and Peggy Jones were " born slobs " who changed their attitudes and developed a great organizing program . Genitalia can be changed on the manikins as well .