washington prospect dim monday u.s. house representatives vote week republican legislation restrict gun sales suspect extremists congress go seven-week summer break republicans include house speaker paul ryan pressure act gun legislation since june 12 mass shoot gay nightclub orlando florida congress begin summer recess friday house floor schedule fill bill republicans say gun legislation unlikely come september prospect serious action could overshadow fall presidential election campaign representative jim jordan ohio head conservative house freedom caucus say anticipate bill measure back national rifle association would give government authorities three days convince judge block sale weapons someone suspect involvement violent extremism ryan unable win support conservative republicans say measure pose potential constitutional problems subject regular legislative channel include formal hear republican lawmakers say discussions aim find compromise continue measure come monday meet republican leaders discuss week agenda say another lawmaker predict would see vote week stalemate leave hang democratic demand strong gun restrictions despite unprecedented 25-hour sit-in house democrats last month sideline potential movement alternative bipartisan bill see possible compromise vote go stall congress return long summer break one republican aide say lawmakers initially believe congress could pass kind measure summer recess orlando shoot raise national security concern poll show majority americans favor great restrictions prospect house vote gun control measure dim