New York Rep. Elise Stefanik, President-elect Donald Trump’s pick for US ambassador to the United Nations, is now refusing to stand by her previous push for Ukraine’s NATO membership — a stance she once framed as critical to regional stability.

President-elect Donald Trump has selected Rep. Elise Stefanik (R-New York) to be U.S. ambassador to the United Nations, in one of his first major appointments since winning the presidential election.

Donald Trump is set to select New York Representative Elise Stefanik as the US ambassador to the United Nations, according to reports. The 40-year-old GOP lawmaker is said to have accepted the president-elect’s offer after Trump made a statement to the New York Post on Sunday evening.