officer says there have been more significant arrests in the wake of that attack that has left the u.k. and the rest of europe on edge. it is all "happening now" ." but we begin with us fox news alert come over moments away from the white house press briefing as we await what looks to be a razor-thin vote on the g.o.p. bill to replete do not repeal and replace obamacare, welcome to an eventful second hour of "happening now," i am jenna lee. >> leland: it could be a long afternoon in washington, i am leland vittert in for jon scott. the stakes could not be any higher as we await the white house press briefing on screen right, we know speaker of the house paul ryan is at the white house white 8 right now. screen right is the debate raging right now on the house floor. this after president trump issued an ultimatum to his own party, telling them to get this bill across the finish line today.