reelection efforts. and we'll take a look at how the candidates are scrambling for delegates on the trail. all right now on fox news sunday hello again from fox news in washington. it's another busy campaign weekend. puerto rico votes today. then on tuesday, all eyes will be on illinois. joining us from moline to talk about where the race stands now is mitt romney. governor, welcome back to fox news sunday. >> thanks, brett. good to be with you. >> let's start with afghanistan. tensions between the u.s. and afghanistan appear to be very high at this point. afghanistan president hamid karzai has accused the u.s. of stone walling the investigation into the killing of 16 afghan civilians. he even suggested there might be more than one shooter. he angrily said friday, quote, this has been going on for too long. this is by all means the end of the rope here.