The remains of a fertilizer plant burn after an explosion at the plant in the town of West, Texas. Mike Stone/Reuters /Landov hide caption

itoggle caption Mike Stone/Reuters /Landov

A vehicle is seen near the remains of a fertilizer plant burning after an explosion in West, Texas, near Waco. The explosion ripped through the fertilizer plant late Wednesday. Mike Stone/Reuters /Landov hide caption

itoggle caption Mike Stone/Reuters /Landov

In Forney, Texas, Kaufman County Sheriff's deputies are on the lookout after the killings of Kaufman County District Attorney Mike McLelland and his wife in their Forney home. Mike Fuentes/AP hide caption

itoggle caption Mike Fuentes/AP

This undated photo taken from the Kaufman County, Texas, website shows Kaufman County District Attorney Mike McLelland. McLelland and his wife were found killed in their house on Saturday. AP hide caption

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A Beechcraft airplane sprays insecticide over Dallas early Monday morning to curb the spread of West Nile virus. LM Otero/AP hide caption

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Gov. Rick Perry rules the roost at the Texas Republican Convention in Fort Worth on June 7. But his endorsement of Lt. Gov. David Dewhurst fell flat this week as Tea Party fave Ted Cruz crushed Dewhurst in a GOP runoff for U.S. Senate. LM Otero/AP hide caption

itoggle caption LM Otero/AP

Ted Cruz, left, and David Dewhurst shake hands before their Republican Senate debate in Dallas on June 22. LM Otero/AP hide caption

itoggle caption LM Otero/AP

Texas Gov. Rick Perry is the latest state executive to say no to an expansion of Medicaid. Win McNamee/Getty Images hide caption

itoggle caption Win McNamee/Getty Images