washington u.s. senator rand paul conservative maverick help kill late republican effort overturn obamacare take issue president donald trump tax plan monday ask tweet really republican gop tax plan possibly 30 percent middle class get tax hike hope final detail good kentucky republican say statement twitter cite result recent analysis nonpartisan tax policy center think tank paul message could signal difficulties tax reform senate republicans hold 52-48 majority democrats fail year overturn 2010 affordable care act popularly know obamacare last week republican senator bob corker tell reporters would vote tax legislation raise deficit trump top republicans congress say tax plan release last week deliver big tax cut middle-class families businesses simplify law away myriad deductions loopholes tax break tax policy center find many upper middle-income professionals business people would see tax bill go loss deductions trump economic adviser gary cohn treasury secretary steven mnuchin also acknowledge people could see tax hike republican kevin brady chairman tax-writing house representatives ways mean committee push back center analysis say paul base opinion report u.s. representative dismiss incomplete look love rand paul play baseball together well friend brady say monday group go ... none key detail would allow objective complete analysis brady member big six tax negotiators congress trump administration produce framework decline say whether every american would see tax cut plan add guarantee go work hard low tax every american increase paychecks dramatically simplify code them republican senator criticize trump tax plan