Bush coming to Northern Ireland....

The BBC says " US President George W Bush is to visit Northern Ireland next month. The visit follows this month's US investment in Belfast. The details of the presidential visit are still being worked out. However, it is understood that Mr Bush wants to put his seal of approval on devolution." What i would love to know is what that "seal" actually is? Is this a literal "seal" in the style of those old fashioned stamp things that went on mail about 500 years ago? Is it a figure of speech for "good publicity for the goons who are running our country?" If it is about looking good then our politicians have outed themselves as dafter than i thought by inviting this clown to our little land. I guess it is not like he needs an invite to come "visit" your country now does he?