WASHINGTON (AP) — House Republicans thwarted the latest attempt by Democrats on Thursday to force a vote on curbing gun purchases by suspected terrorists as the two parties continued testing the political impact of last week's mass shooting in California. Last week, the GOP-led Senate rejected its version of legislation preventing suspected terrorists from being allowed to buy firearms from licensed gun dealers. Republicans argued that federal lists of terror suspects are riddled with errors that people should be allowed to contest before losing their right to own a weapon.