complicated on capitol hill. >> it's hard for me to imagine a nominee that donald trump would choose that would get republican support that we could support. you are right. >> you would do your best to hold the seat open? >> absolutely. >> i think that is something the american people since they will not tolerate. we look forward to receiving a nomination and moving forward. >> it's not surprising the left would question the eventual nominee but there are growing concerns from some on the right as well. a coalition of pro-life groups and leaders sent a letter saying they are worried about some of the candidates on the list of 21 potential picks mr. trump has released. "we urge you to consider, not consider candidates lacking a pro-life record. several of these charges have written or spoken in ways that are at odds with the pro-life position." the transition team says not to worry. all are being thoroughly vetted. >> the president is working very