"Obviously not," Brewer replied. "You know Arizona has been under terrorist attacks, if you will, with all of this illegal immigration that has been taking place on our very porous border. […] The whole issue comes back, that we do not and will not tolerate illegal immigration bringing with it very much so the implications of crime and terrorism into our state."

Republican governor, Jan Brewer

This is hyperbole.

Rep. Pearce, R-Mesa, said during an interview on “Morning Edition” on KJZZ (91.5 FM) that he would support bringing back a controversial federal program dubbed “Operation Wetback,” which was designed to apprehend and deport illegal Mexican immigrants in the mid-1950s.

“We know what we need to do,” Pearce said on the radio show. “In 1953, Dwight D. Eisenhower put together a task force called ‘Operation Wetback.’ He removed, in less than a year, 1.3 million illegal aliens. They must be deported.”

State Rep. Russell Pearce (Who introduced the bill)

The bill was written by Kris Kobach, he thinks that today's immigrants will "divide the United States into two peoples, two cultures, two languages."