The Trump administration on Tuesday will announce a plan to extend some $12 billion in emergency aid to farmers amid growing concerns that the U.S. agricultural sector could suffer from President Donald Trump’s escalating trade disputes with allies, a person familiar with the matter said.

The trade rift between the U.S. and some of its closest allies has prompted retaliations and legal actions following Trump’s decision earlier this year to impose tariffs of 10% on aluminum imports and 25% on steel imports from Canada, Mexico and the EU.