president trump clearly wants to be the one setting the terms of debate about border security as his arguments in favor of building that border wall have failed and left the partial government shutdown to 18 days now. and they express concerns that the border message just wasn't resonating with people, even after trump made several attempts to personally sell that message which was at the brief appearance at the podium last week in the rose garden. so far he hasn't been able to convince members of congress or most americans that the wall is necessary. sources say the idea of trump doing a prime time address have been floating around the west wing for about a week now. acting chief of staff mick mulvaney was a proponent of this idea. president trump expressed interest in doing this prime time address over the weekend during a staff retreat at camp david. we expect the president to use his speech tonight to cast the problem of illegal immigration