colorado spring colo. officials conservative u.s. political network oversee koch brothers say unhappy healthcare bill may vote senate week lobby change weekend event conservative donors top aid charles koch billionaire energy magnate say senate bill go far enough dismantle former president barack obama signature healthcare law also know obamacare disappoint movement dramatic toward full repeal say tim phillips president americans prosperity grassroots advocacy group back charles koch brother david senate 142-page proposal work secret group lead senate majority leader mcconnell aim deliver central campaign promise president donald trump repeal obamacare provide coverage 20 million americans since passage 2010. republicans view law formally call affordable care act costly government intrusion say individual insurance market create collapse phillips aid koch network tell reuters want see senate bill roll back obamacare expansion medicaid program poor disable americans also contend bill enough reform u.s. healthcare system cut cost aid say lobby efforts reshape bill continue ahead plan vote similar concern help steer house version bill conservative direction primary mover effort mark meadows republican congressman north carolina attend koch donor event meadows chairman conservative freedom caucus house say prepare support senate bill clear chamber sign quick action land legislation trump desk possible however meadows say senate version bill would need amend allow insurers sell plan obamacare insurance exchange offer less-expensive plan comply law coverage requirements republican senator ted cruz texas currently oppose senate bill offer amendment along line cruz attend koch event senators jeff flake arizona ben sasse nebraska remain undecided meadows also seek amendment would allow consumers private health save account deduct cost insurance premiums tax senate leaders set goal pass healthcare measure end week ahead july congressional recess would send back house senate pass legislation week palatable house meadows say conceivable house could pass version choose forgo formal conference committee would reconcile senate house bill say could result send bill trump desk signature recess get vote end week could difficult five senate republicans include cruz publicly voice opposition current senate draft senate democrats expect back mean mcconnell afford lose two senate republicans sign koch network influence phillips say organization prepare spend much 400 million next year congressional elections advocate network conservative cause conservative koch network criticize u.s. senate healthcare bill