pelley: today, republicans took the biggest step yet to make good on its vow to repeal and replace obamacare. just six weeks after their effort appeared dead, the house passed a revised g.o.p. plan, barely, without a single democratic vote. just as obamacare was passed without a single republican vote. 20 republicans defected today. the rest joined the president at the white house to celebrate his first major legislative victory. here s our chief congressional rerrespondent, nancy cordes. this has really brought the republican party together. y> reporter: president trump rdvored the legislative victory in the rose garden after house republicans passed their bill with one vote to spare. the ayes are 217. the nays are 213. reporter: g.o.p. leaders decided to hold the vote after a tist-minute boost in funds for soople with pre-existing conditions appeared to sway some hold-outs. i m trying to get back and r:ad it now. reporter: even as protesters heckled them outside