Des Moines Register Citing what it says is mounting public support, a group of environmental, legislative and farm leaders called Tuesday for a moratorium on new confined animal feeding operations, saying the large-scale livestock-raising facilities pollute Iowa's water and air and harm rural communities. Rep. Art Staed of Cedar Rapids and Sen. Pam Jochum of Dubuque, both Democrats, introduced complementary bills that call for Iowa to halt construction of new CAFOs. It's the fourth year groups have proposed a moratorium. So far, efforts have been unsuccessful, given opposition from Republicans who control the Iowa House, Senate and governor's office, the groups said.