When Congress invests in programs to combat global hunger, it is putting real money into the pockets of Iowa farmers. (Photo via Getty Images)In November 1979, I escorted Gov. Robert D. Ray and first lady Billy Ray to the Thai-Cambodian border, where we witnessed thousands of Cambodians who had escaped the Khmer Rouge genocide starving to death. Victims were dying at the rate of 50 to 100 a day, bulldozed into mass graves. After this trip, Gov. …