new york/washington president-elect donald trump able make many promise change immigration policy unilaterally exercise kind executive power criticize president barack obama use measure lay ten-point immigration policy plan trump transition website could set motion without legislative approval fully implement would require fund congress would approve legal experts say two core piece trump plan example involve remove criminal immigrants country illegally end catch release cross border illegally await court hear shift policy issue could accomplish put new enforcement directives agents field department homeland security change would expensive require dramatic expansion immigration court detention facilities use immigration customs enforcement say stephen yale-loehr immigration law expert cornell law school deportations would require staff every level system investigate apprehend process target immigration court already backload 500,000 case detention space currently stretch house 41,000 immigrants currently await deportation hear far hold facilities would need detainees long release await court date even completely end release immigrants await hear would difficult recent court decision prohibit detention long 20 days adults children migrate together demographic surge 77,000 fiscal year 2016. trump transition team explain new president intend implement plan president-elect focus name cabinet build administration prepare hit grind run inauguration day say jason miller spokesman trump transition team plenty time discuss detail policy specifics swearing-in democratic attorneys general civil right group already busy prepare legal arguments try stop trump executive action implement proposals pushback similar challenge obama face republican attorneys general conservative group act alone try shield nearly million immigrants deportation among easy immigration promise trump fulfill vow reverse obama executive order president-elect could eliminate pen-stroke obama 2012 policy allow immigrants bring illegally children apply work permit program know daca trump say end would happen next unclear 740,000 people approve deportation relief program many worry address identify information could use new administration target deportation steve legomsky former chief counsel u.s. citizenship immigration service say laws would prevent trump administration use program record immigration enforcement president-elect say would deny visa people countries adequate screen occur another point trump immigration plan could also easily accomplish president current law administration unilaterally suspend visa individuals group people deem detrimental interest unite state past presidents choose apply statute narrowly keep particular dictators deal emergencies example law word broadly could theoretically apply entire countries say david martin emeritus professor international law university virginia school law trump promise make legal immigration good serve america domestic workforce would likely focus least initially temporary employment visa h1-b issue specialize workers field technology congress set maximum number visa issue annually trump could ask department justice step investigations company use visa focus whether discriminate american workers could include ban tech outsource firm large users h-1b visa program violate rule say ron hira professor howard university employers go catch cross hairs say business immigration lawyer matthew dunn law firm kramer levin trump broad power implement immigration policies legal experts