Trump cited the Republicans' razor-thin majority in Congress, where Stefanik has served in the party leadership.

The Trump administration is withdrawing its nomination of Representative Elise Stefanik (R., N.Y.) to serve as the next Ambassador to the United Nations to help protect the slim Republican majority in the House.

The Republican congresswoman's nomination had been expected to easily clear the Senate — but Republicans are concerned about holding on to their thin majority in the House of Representatives.