Trump's plan for a huge increase in defense spending next fiscal year would mean billions more for equipment and training.
Vice Adm. Shoshana Chatfield represented the U.S. in NATO's Military Commission, the alliance's leading military board.
The U.S. continues to strike Houthi militants, who have targeted Israel and American ships in the region.
Republican leaders are concerned about rumored plans to scale back American military involvement in Europe and Japan.
