highlight day u.s. president donald trump administration tuesday trump endorse republican legislation replace obamacare healthcare law face rebellion conservative group lawmakers denounce complicate chance congressional approval house republican health insurance plan suggest post-obamacare health insurance less affordable investors insurers industry source say raise question future enrollment insurance company participation large u.s. pharmaceutical biotechnology company share sell trump say work system reduce drug price senate democrats seek capitalize revelations trump campaign contact russia urge top republican lawmaker obtain president tax return matter national security lawyer take investigation russian meddle u.s. presidential election win senate confirmation become deputy attorney general rebuff democrats demand appointment special prosecutor case senate arm service committee overwhelmingly approve army lieutenant general h.r mcmaster trump second national security adviser despite concern handle sexual assault case white house spokesman sean spic say reason think trump support fbi director jam comey dispute president allegation without evidence wiretapped last year chairman u.s. house representatives intelligence committee say see evidence support trump allegation wiretapped then-president barack obama 2016 presidential campaign trump administration pledge statement show great strictness restrictions iran nuclear activities impose deal major power give little indication might mean agreement unite state start deploy first elements advance anti-missile defense system south korea north korea test four ballistic missiles u.s. pacific command say despite angry opposition china senate minority leader chuck schumer 11 democrats say critical trump administration retain new vehicle fuel efficiency rule argue high standards achievable trump nominate washington lawyer noel francisco position solicitor general government top advocate u.s. supreme court accord two source familiar hire process highlight trump presidency march 6:19 p.m. est