1. Short title This Act may be cited as the United States and Republic of Korea Alliance Support Act . 2. Limitation on use of funds to reduce the total number of members of the Armed Forces serving on active duty who are deployed to the Republic of Korea (a) Sense of Congress It is the sense of Congress that— (1) it is in the United States national interest to maintain treaty alliances and its forward military presence in the Indo-Pacific region to deter conflict and preserve peace and security; (2) the United States fully stands behind commitments to its allies in Northeast Asia as articulated in the Mutual Defense Treaty Between the United States and the Republic of Korea and the Treaty of Mutual Cooperation and Security between the United States and Japan; (3) the alliances between the United States and the Republic of Korea and between the United States and Japan form the bedrock of regional stability in the Indo-Pacific region, including with respect to the threat posed by North Korea; (4) the withdrawal or significant reduction of United States Armed Forces from the Republic of Korea may risk upsetting the military balance in that region; and (5) Congress should be consulted in advance of any significant changes to the status quo on the Korean Peninsula. (b) Limitation None of the funds made available to the Department of Defense for fiscal year 2019 may be used to reduce the total number of members of the United States Armed Forces serving on active duty who are deployed to the Republic of Korea below 22,000 unless— (1) the Secretary of Defense first submits to the appropriate congressional committees a report on— (A) the effect of such reduction on preserving deterrence on the Korean Peninsula; (B) the anticipated reaction of North Korea to such reduction; (C) the effect of such reduction on increasing incentives for the Republic of Korea to develop an independent nuclear deterrent