EU trade ministers have agreed that U.S. President Donald Trump’s 30% tariffs announced on the European Union are “absolutely unacceptable,” and they are studying a new set of countermeasures to respond to the move.

European Union officials have drawn up plans to impose levies on American imports, but questions abound about whether they would go through with them.

The European Union could target Boeing and whiskey-maker Brown-Forman under its plans for retaliatory tariffs if the bloc can’t reach a trade deal with the U.S.