obama achievements that are at greatest risk. donald trump has vowed to undue much of barack obama's social agenda. >> the change will begin my first day in office. >> they're bringing drugs. they're bringing crime. build that wall. build that wall. african-americans, hispanics, are living in hell. i'm pro-life. the judges will be pro-life. >> it's that last item he mentioned, judges, that may have the most powerful effect in undoing the obama legacy. donald trump has said he plans to put a hard-line conservative on the supreme court. that would create a majority that could reverse almost all of obama's programs. obama thought that the supreme court could look more like america. >> president obama names his first supreme court pick and history's first latina.