The BBC reports:

Calls have been made for Barack Obama to mark his inauguration as US president by creating his own tartan.
The move would be the ideal way to celebrate Mr Obama’s Scottish ancestry and boost tourism, according to the Scottish Conservative Party.
Mr Obama can be traced to William the Lion, who ruled Scotland from 1165 to 1214, genealogists believe.

You can’t hide your Lion thighs. The entire kilt industry depends on it:

The Scottish Conservatives have written to Mr Obama about the tartan, which the party said could boost tartan exports amid the economic downturn.

Real Scotsmen famously wear nothing under their kilts, so, if Obama does decide to play Jock McBailout, he risks decimating the entire American underwear industry.