(CNN) The US State Department is sending two high-level officials to a migration summit this weekend in Hungary -- a country whose controversial far-right ruling party has maintained a hardline anti-migration stance, with one of the strictest policies against immigrants in Europe, and has cracked down on civic organizations, the media and academic institutions.

It is notable that none of the US's key European allies -- Germany, France, or the United Kingdom -- are sending any representatives from their foreign ministries. And the decision by the US to take part comes amid concerns over the spreading influence of far-right ultra nationalist parties on the continent. Poland is the only other country besides the US and Hungary with a government official scheduled to speak; they're sending a minister for humanitarian aid programs.

Hungary has built a border fence, sent the bill for it to the EU, and made it a crime for citizens to offer help to undocumented immigrants. The State Department officials will speak at the summit just days after Hungary's ruling party was suspended from its EU Parliamentary coalition after refusing to moderate its views.

"We cannot compromise on democracy, rule of law, freedom of press, academic freedom or minorities rights. And anti-EU rhetoric is unacceptable. The divergences between EPP and Fidesz must cease," Joseph Daul, the president of that coalition (the European People's Party) said Wednesday.

Hungarian government official stressed before the vote to suspend the party that they would "under no circumstances be able to compromise on fundamental issues such as the defence of Christian culture or the rejection of immigration."

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