san francisco/new york president donald trump travel ban citizens six muslim-majority nations face second challenge u.s. appeal court next month time republican state back measure one democratic state attorney general drop legal fight week legal experts say state realignment could signal change make last month trump original executive order strengthen government case sixteen democratic state attorneys general district colombia thursday file friend court brief back hawaii bid block march executive order two federal judge put hold could implement hawaii state argue ban violate u.s. constitution discriminate muslims pennsylvania attorney general josh shapiro oppose original ban trump sign jan. 27 join thursday brief file 9th u.s. circuit court appeal san francisco shapiro decline comment side texas alone support original january order gain support 14 republican state urge ban go forward legal brief file april 10. state back government argument president wide authority implement immigration policy ban need prevent terrorist attack trump original ban president say need national security head attack islamist militants apply seven muslim-majority nations indefinitely ban entry refugees syria revise narrow flurry legal challenge second executive order much carefully write first maybe various state analyze interest join say stephen yale-loehr immigration expert cornell university law school however say amicus brief sometimes file political reason judge pay close attention amicus brief others disregard u.s. department justice decline comment trump january order hastily implement days inauguration lead chaos protest airports two dozen lawsuits federal judge seattle halt order 9th circuit uphold rule white house re-crafted order exclude legal permanent residents remove iraq list target countries iran libya somalia sudan syria yemen still include new order new ban also drop language give preference refugees part persecute religious minority country citizenship change mean chip away plaintiffs stand sue require anyone bring lawsuit show directly harm action contest soon second order sign state civil right group go back court say still discriminatory federal district judge maryland hawaii put second order hold could take effect march 16. judge hawaii block two central section ban travel refugees maryland judge halt travel portion focus hawaii case hear 9th circuit may 15 4th circuit appeal court virginia slat hear arguments maryland case may 8. state stake side fight pennsylvania among 18 state include michigan ohio new jersey take side issue opt file legal brief u.s. state realign legal battle trump 's travel ban