Wasn't the Bush administration for Free Trade?

Evidently only when it serves the interests of its supporters. When restricted trade is better...

The Bush administration on Monday upheld the imposition of penalty tariffs on shrimp imports from Brazil, Ecuador, India and Thailand.

The move won praise from U.S. shrimp producers but drew criticism from importers, who said the penalty tariffs would drive up food costs for consumers.

Link.

While this might not technically be pork-barrel legislation, it's still not kosher.