Personal pain from the front lines of immigration reform battle
"Margaret Heintz sputtered in frustration.
"There's nothing we can do," the Marshalltown, Iowa, woman said to her daughter, Mona Kilborn, when they talked about their shared point of aggravation -- illegal immigrants.
"Mom, you can do something," Kilborn said. "You can write your congressman. I'll even get you the address."
So in September 2007, the 90-year-old Heintz put pen to paper for her first letter to a politician. Two weeks later, she died at the hands of an illegal immigrant.