mexico stepping up enforcement after reaching a deal with the u.s. to curb the flow of central american migrants at the southern border. welcome to america s news headquarters from washington. nice to be with you here on a beautiful day in dc. name leland vittert. the president says he will suspend his proposed tariffs on mexico court indefinitely but now u.s. officials are saying the president could call back his terror threats. if mexico does not meet the expectations, david spunt to make sense of that force at the white house. hi david. reporter: hi, leland. white house officials said yesterday morning on friday, they expect the tariffs to go through on monday. of course plans change when the president made the announcement last night.he is at his golf club right now in virginia. he has been tweeting up a storm about the mexico trade deal today.