A president ca n't be effective without being liked , marketing professor says . Obama 's ratings as a person are higher than those of his policies . `` It may well be that this is the beginning of a trend , or it may just be that this is just a blip . '' Comment: U.S. homecoming king affects U.S. image abroad . Too early to tell if polling will be a trend or `` just a blip , '' politics professor says .
A president ca n't be effective without being liked , marketing professor says . Obama 's ratings as a person are higher than those of his policies . Comment: U.S. homecoming king affects U.S. image abroad . Too early to tell if polling will be a trend or `` just a blip , '' politics professor says .