aisle raising concerns as they dig deeper into allegations of improper conduct at various points in jackson's career. senators declined to publicly detail specifics of the allegations but say they are looking into whether they are substantial enough to up end his nomination. well, sources tell cnn that jackson's nomination could be hitting some real roadblocks here. we are hearing that there is a possibility that his confirmation hearing could be postponed. meanwhile, we will see president trump and president macron several times today. they'll have a traditional military welcoming ceremony and then a rose garden press conference later today, alisyn and chris. >> abby, please stay with us for the panel. and let's bring in cnn political analyst john avlon. so, big stakes. emmanuel macron comes here with a really loaded agenda, staying in the iran deal. we know that there are some negotiations going on curiously between the europeans and the americans, but they don't involve the russians or the