marrakesh morocco u.s. president-elect donald trump could use legal short-cuts pull global agreement fight climate change within year keep campaign promise by-passing theoretical four-year wait lawyers say trump call global warm hoax say invent chinese undermine u.s. manufacture say want cancel 2015 paris agreement among almost 200 nations enter force nov. 4. accord seek phase greenhouse gas emissions century shift fossil fuel say article 28 country want pull join wait four years theory early date withdrawal nov. 2020 around time next u.s. presidential election trump could pull parent treaty paris agreement 1992 u.n. framework convention climate change year notice also void u.s. participation paris agreement u.n. legal experts say would controversial partly convention sign former republican president george bush 1992 approve u.s. senate would also severely strain relations many foreign nations meet marrakesh morocco two weeks talk work ways implement pledge action paris agreement many countries reaffirm support 195-nation accord since trump election victory tuesday trump withdraw paris agreement would political cost pull convention cost would great say daniel bodansky professor arizona state university sandra day connor college law would go nuclear would signal unite state interest cooperate nations climate change say alden meyer union concern scientists convention set goal avoid dangerous man-made damage climate avert heat wave downpours flood extinctions animals plant rise sea level paris agreement much explicit seek phase net greenhouse gas emissions second half century limit global warm well degrees celsius 3.6 fahrenheit pre-industrial time trump want safeguard job u.s. coal oil industries say paris agreement would undermine u.s. economy say may go cancel paris climate agreement accord since enter force international law thursday ratify 103 nations represent 73 percent greenhouse gas emissions trump could also pull paris immediately republican-controlled house senate pass law ask bodansky say supreme court tradition uphold u.s. laws conflict international law trump act approval congress problem u.s. law say would little recourse challenge decision international law paris agreement sanction non-compliance many delegate reckon trump likely priorities economy immigration trump may find easy simply oppose president barack obama domestic plan reduce u.s. emissions 26 28 percent 2005 level 2025. idea paris agreement four-year wait set legal trap say tosi mpanu mpanu head 48-nation group least develop nations time trump get round think could another president trump could pull global climate accord year lawyers