detroit/washington republican donald trump seek regain momentum white house campaign monday propose sweep tax break cut federal regulations revival stall keystone xl oil pipeline project new york businessman use speech economy detroit try turn page week missteps come heavy criticism include party rival democrat hillary clinton surge ahead opinion poll three months ahead nov. election want jump-start america trump say even hard trump stick prepare remark rather freewheel style often produce controversial comment rally keep cool 14 protesters jump feet shout coordinate intervals speak detroit economic club trump remark repeatedly cheer crowd appear target affluent business community work people particular suffer decline u.s. manufacture cities detroit dismiss clinton represent tire voice past begin great national conversation economic renewal america trump say conversation make america great everyone ... especially least much speech reflect republican talk point critics say proposals lack detail republican operatives others saw speech praise trump turn focus policy contrast ideas clinton question trump whether able keep campaign message republicans want trump pitch tax plan mirror traditional republican think low tax slash regulation generate economic growth job propose low individual corporate rat discount 10 percent levy businesses bring back profit hold overseas trump plan create new tax deductions childcare cost raise question economists whether lower-income families would benefit many republicans remain frustrate trade vision buck party orthodoxy call rewrite major agreements response good bad ugly say lanhee chen policy director 2012 presidential campaign republican mitt romney think trade position remain pretty ugly say understand think strong effort least meld elements conservative economic policy trump populist think trump effort shift focus come widely see bad week campaign spar party leaders get entangle dispute parent muslim u.s. soldier kill iraq war republican senator susan collins add name monday grow list republican lawmakers say vote trump frustrate republicans plan back conservative alternative former cia officer evan mcmullin monday trump wait frequent disruptions protesters end smile refrain practice campaign rally ask security get here group call michigan people campaign take credit protest say aim trump recent comment sexual harassment clinton outline economic vision michigan thursday statement issue trump speech campaign say plan would give tax break wealthy big company would hurt work families rally monday st. petersburg florida deride list economic advisers trump release last week six guy name steve try make old tire ideas sound new clinton say want basically repackage trickle-down economics trump rough week take toll opinion poll washington post-abc news poll release sunday give clinton eight-point lead 50 percent 42 percent trump real estate developer never hold elect public office tout practical experience potential create job blame president barack obama call weak recovery economic recession monday say clinton would rely policies work candidate past trump say campaign future reaction crowd detroit mix think lay good bullet point go solve economic problems trade policies say insurance executive sal giammursta others want detail people look substance say lawyer al rogalski trump call temporary moratorium new regulations repeat pledge rewrite landmark north american trade deal president bill clinton hillary clinton husband sign 1994 withdraw 12-nation trans-pacific partnership deal back obama much reaction trump tax plan propose low corporate tax rate 15 percent current 35 percent propose low income-based individual tax bracket 12 percent 25 percent 33 percent 2015 trump propose low top rate 25 percent criticism budget experts say low rat would balloon deficits tweak proposal line policies support republicans congress encourage donald trump appear modify tax plan say maya macguineas president anti-debt committee responsible federal budget research group tax policy center estimate december trump original plan would reduce federal tax revenues 9.5 trillion first decade steve moore adviser trump say campaign believe make change bring plan cost trillion trillion campaign aide say trump would give detail late speech trump seek campaign reset detroit economic speech