Washington Post: Iowa is one of 13 states that banded together Monday to ask the U.S. Supreme Court to block a California law requiring any eggs sold there to come from hens that have space to stretch out in their cages. In a lawsuit filed directly to the high court, the states allege that California’s law has cost consumers nationwide up to $350 million annually because of higher egg prices since it took effect in 2015. The lawsuit argues that California’s requirements violate the U.S. Constitution’s interstate commerce clause and are pre-empted by federal law.