washington president donald trump call 1.5 billion year help build wall along border mexico could jeopardy fellow republicans congress weigh delay decision request republican senator roy blunt member party leadership tell reporters tuesday money wall likely would couple spend bill must pass april 28 avoid shut federal agencies whose fund expire blunt say must-do fund come together good without trump additional request border wall military program could consider late time democrats threaten block bill fund federal agencies april 29 sept. 30 end current fiscal year money border wall include object one trump premier 2016 campaign promise say poorly plan border security measure already construct consideration run president trump pledge mexico would pay build wall design keep illegal immigrants drug enter unite state mexican government say initiative also face resistance among republicans include lawmakers represent border towns federal government would purchase land many locations order construct edifice could make construction cost soar reuters report wall could end cost much 21.6 billion far 12 billion trump cite representative mario diaz-balart also express skepticism congress ability approve fund wall give super-majority vote need senate major legislation ask wall diaz-balart senior member house representatives appropriations committee lead voice immigration policy say always will look things try get 60-vote threshold border interior security lawmakers say progress make legislation keep government run beyond april 28. house speaker paul ryan remove another potential land mine tuesday say republican drive end federal fund women healthcare provider plan parenthood would best accomplish legislation upcoming fund bill democrats vow stop must-do money bill end plan parenthood federal fund trump 's fund request u.s. border wall hit snag among republicans