washington trump administration announcement sunday issue new travel restrictions people enter unite state eight countries could lead upcoming supreme court case previous controversial ban end whimper rather bang new presidential proclamation set restrictions citizens eight countries set go effect oct. 18 eight days court due hear oral arguments legality trump early ban trump administration sunday night ask high court consider hear new brief case oral argument address effect proclamation issue currently pending court case nine-justice court could skip decide case altogether legal experts say march order supreme court review ban travelers six muslim-majority countries limit refugee admissions challengers say order discriminate muslims violation u.s. constitution decision issue would consequential trump also future presidents would bind challenge policy long book court various options resolve dispute without issue rule 90-day travel ban cover iran libya somalia sudan syria yemen run sunday 120-day refugee ban expire oct. 24. even trump late announcement experience supreme court lawyers immigration law experts express doubt whether nine justices would want issue decisive rule part desire stay contentious issue court avoid enter fray may appeal say anil kalhan immigration law professor drexel university school law travel restrictions expire court easy way could simply say case long live issue therefore legal parlance moot supreme court already intervene three time since march limit scope low court rule strike march order significant act come june allow ban go effect limit fashion unsigned decision suggest court four liberals two conservative majority chief justice john roberts justice anthony kennedy keen compromise three conservatives include trump appointee neil gorsuch say ban allow go effect full trump administration yet say would prefer court former justice department lawyers say likely request court dismiss case also throw low court rule strike ban benefit administration would wipe precedents include broad decision richmond-based 4th u.s. circuit court appeal say order discriminate muslims decision cite trump campaign statements conclude order motivate anti-muslim bias trump administration say order need national security reason certainly government interest get adverse ... opinions book decisions constrain executive authority say washington lawyer pratik shah previously work justice department march order take effect june 26 follow supreme court rule narrow scope low court rule litigation continue summer exactly cover ban culminate supreme court decision sept. 12 allow trump enforce refugee ban broadly keep low court restrictions prevent close family members deny entry march order trump second attempt impose travel ban original much broad jan. 27 plan block low court follow turmoil u.s. airports cause abrupt rollout version story refiled change date dateline supreme court option duck travel ban rule