So the news is out that President Obama will not be speaking in person at the Jamboree, but instead appearing in a pre-taped message. That should assauge some of the security concerns.
And before this thread gets flooded with "Obama hates Scouts" comments ... Ronald Reagan and Richard Nixon never spoke at Jambo, either. (Neither did Ford, but that wasn't his fault. The '73 and '77 events bracketed his partial term.)