The European Union could hit the United States with counter-tariffs on 93 billion euros ($109 billion) worth of U.S. goods if the two sides fail to reach a trade deal by Washington's August 1 deadline for imposing import levies.

The EU says its negotiators are working "might and main" on a deal, but the decision rests with US President Trump.

The European Union and the US are progressing toward an agreement that would set a 15% tariff for most imports, according to diplomats briefed on the negotiations.