For more than a year, we've been investigating what’s happening to family farms across the country and the growing concerns over toxic chemicals farmers say are contaminating their land, water and livelihoods. Now, one of those families is at the center of a federal lawsuit accusing the government of failing to protect farmers nationwide. About 30 miles outside of Fort Worth, in Johnson County, we gazed across a sprawling Texas ranch. It was Patsy Schultz’s legacy.