Cause they said it without having anything. It isn't that Obama was doing something that no other president has ever done. The wing nut pinheads just objected beacuse....
You can say anything you want about anything. I'm certainly not going to stop anyone from making a fool of themselves.
I do find it curious that people are now complaining that he was going to make a political speech but when one looks at the speeches of both Raygun and daddy Bush they did make political speeches to children.
One can't prove a negative but one can certainly look at people who makes fools of themselves and seem to do it continually.