European Union lawmakers are poised to halt approval of the EU’s trade deal with the U.S. over President Donald Trump’s vow to impose tariffs on countries that supported Greenland in the face of American threats.

Manfred Weber, president of the European People’s Party, the largest political group in the European Parliament, said on Saturday that agreement with the U.S. is no longer possible.

“The EPP is in favor of the EU-U.S. trade deal, but given Donald Trump’s threats regarding Greenland, approval is not possible at this stage,” Weber posted on social media. He added that the EU agreement to lower tariffs on “U.S. products must be put on hold.”