washington u.s. supreme court decide three case come months could help hind president donald trump efforts ramp border security accelerate deportations country illegally three case reach court democratic president barack obama leave office deal broadly degree non-citizens assert right u.s. constitution come time court one justice short divide along ideological line four conservatives four liberals justices issue rule end june backdrop high-profile litigation challenge lawfulness trump controversial travel ban people travel seven predominantly muslim countries pertinent three case term republican trump administration priorities involve whether immigrants custody deportation proceed right hear request release case promptly adjudicate long-running class action litigation bring american civil liberties union aclu behalf thousands immigrants detain six months include immigrants apprehend border seek illegal entry unite state legal permanent residents deportation proceed convict crimes case also could affect long-term u.s. residents enter country illegally subsequently detain trump administration say want end release immigrants face deportation speed process eject country decision case require additional court hear could direct implications administration plan say aclu lawyer ahilan arulanantham especially since immigration court currently backlog 500,000cases aclu estimate 8,000 immigrants nationwide give time hold least six months u.s. immigration customs enforcement official unable immediately confirm data length detention say fiscal year 2016 average daily count detainees 35,000 trump want put people deportation increase number immigration judge people go wait long long get hear say stephen yale-loehr immigration law professor cornell law school trump administration pledge sharply curtail illegal immigration initiatives build wall along u.s-mexican border hire thousands federal agents police border arrest deport immigrants live unite state enter country illegally trump also threaten withhold federal fund so-called sanctuary cities offer protections immigrants could face deportation cross-border shoot case decide concern whether u.s. government officials sue mistreatment non-citizens two separate contexts one decide whether family 15-year-old mexican teenager sergio hernandez kill mexican soil u.s. agent fire across border texas sue u.s. constitution scenario lawyers hernandez family say could become frequent trump administration act proposal increase number border guard 5,000 raise prospect similar confrontations court hear arguments case feb. 21. second civil lawsuit bring immigrants mainly muslims detain new york sept. 11 2001 attack claim mistreat group muslim arab south asian non-u.s. citizens say hold terrorism suspect base race religion ethnicity immigration status abuse detention deport long-running case focus whether senior officials administration republican president george w. bush sue role direct action obama administration argue court wary extend liability action senior officials especially implicate national security immigration base skepticism justices jan. 18 oral argument court seem likely rule detainees chief justice john roberts express concern permit lawsuits senior u.s. officials would become way challenge national policy litigation seek monetary damage individuals implement policy three case separate litigation legality trump travel ban could also ultimately decide high court key case front pending appeal court san francisco three-judge panel uphold low court decision put ban hold language upcoming rule address right non-citizens analyze court review govenrment action immigration national security could relevance case legal experts say anil kalhan immigration law professor drexel university kline school law say furor treatment non-u.s. citizens affect travel ban could bleed court approach case might atmospherics go might lead close look justices say story refiled correct spell ahilan arulanantham paragraph six u.s. top court set guidelines trump treatment non-citizens