The United States imposed sanctions on a senior member of the Hungarian government for alleged corruption, the U.S. Treasury said on Tuesday, a move Budapest said it would challenge when President-elect Donald Trump takes power.

Antal Rogan is the first high-ranking Hungarian official sanctioned by the U.S. under the Magnitsky Act, which targets individuals involved in serious human rights abuses and corruption.

By Tamas Csonka The US has sanctioned Antal Rogan, a close ally of Hungarian Prime Minister Viktor Orban, for his alleged leading role in systemic public corruption in Hungary, outgoing US Ambassador David Pressman informed local media at an extraordinary press conference on January 7.