Obama told ABC News in an interview Taped on Wednesday that he was briefed on the would-be suicide mission in April, adding that officials stay on top of the situation and the lives and aircraft were never in danger.
"I do not think there should be any surprise that I've been very clear that -. Even with the death of Osama) bin Laden, even as weak as Al Qaeda is - if you have a bunch of extremists who are adamant of trying to kill civilians, but we're going to have to maintain constant vigilance and create a whole series of laws on the protection and barriers, "he said in an interview.
"I do not think there should be any surprise that I've been very clear that -. Even with the death of Osama) bin Laden, even as weak as Al Qaeda is - if you have a bunch of extremists who are adamant of trying to kill civilians, but we're going to have to maintain constant vigilance and create a whole series of laws on the protection and barriers, "he said in an interview.
"We were on top all the time. Nowhere were the American lives at risk or American aircraft in danger," he added.
Details emerged earlier this week of conspiracy, participating in the would-be suicide bomber who was planted in Yemen al Qaeda affiliate by Allied Intelligence Agency, or turned into Informant early in the plot.
Obama said while security experts were able to foil the plot and the nation's law enforcement, military and intelligence officers have continued to improve, officials would have to remain vigilant to protect the public.
"It is an indicator of success, but there is no reason to be complacent," he told ABC in a wide-raging interview that also news for Obama to support gay marriage.