Americans favour Obama to defend against aliens Eleven per cent of Americans told a survey they were confident they had spotted a UFO. 36 per cent said they believed in UFOs Women, younger men backed Obama Obama faces re-election in November NEARLY two in three Americans think President Barack Obama is better suited than Republican rival Mitt Romney to deal with an alien invasion, according to a survey released today. National Geographic Channel contacted 1114 adults across the US last month for its fanciful opinion poll ahead of its new cable television documentary series Chasing UFOs. Thirty-six per cent of respondents said they were certain that unidentified flying objects exist. Eleven per cent were confident they had spotted a UFO, and 20 per cent said they knew someone who claimed to have seen one. With Mr Obama facing re-election in November, 65 per cent said he would be more adept than Mr Romney to respond to an alien invasion, with women and younger Americans more likely than men and over-65s to agree with that prospect. National Geographic Channel said the results of the email and online "Aliens Among Us" survey dovetailed with the research underpinning Chasing UFOs with Texas and Colorado residents describing their encounters with mysterious flying objects. The poll had a margin of error of 2.9 per cent.