Since the end of World War II, the United States has been the dominant force on the global stage. The strength of our national character and our economic and military might cannot be matched, and we have used our position as a force for good, fostering a world order rooted in our values of freedom, human rights, the rule of law, and open markets. The fall of the Soviet Union in the early 1990s left the U.S. as the sole remaining superpower, and the loss of our competition gradually caused a shift in our national security strategy.America is still the freest, most powerful, and most prosperous nation in all the world. However, over the past two decades, U.S. dominance has increasingly been challenged by numerous rising threats to the U.S.-led global order. These threats point to the reemergence of powerful competition, the likes of which we have not seen since the Cold War, and they require us to reevaluate our national security strategy once again.There is perhaps no bigger threat to continued U.S. dominance than China. For decades now, the prevailing foreign policy consensus on that nation has been misguided. Conventional wisdom was that a narrow strategy of simply integrating China into global markets and facilitating a more robust trading relationship would transition Beijing away from communism and toward freer markets. Instead, China has exploited its opportunities to double down on authoritarianism and use international markets to amass enormous economic and military strength, often by nefarious means. Beijing now leverages this strength to undermine the U.S.-led international order by replacing our leadership with their own distorted worldview. The recent COVID-19 crisis has clearly illustrated the danger of allowing this to happen.Meanwhile, throughout the last decade in particular, Russia has aggressively reasserted itself as a global power with its own clear intent to undermine the U.S.-led international order. Under the leadership of dictator and former KGB agent Vladimir Putin, the Kremlin's goals are to advance authoritarianism both at home and abroad. It has invaded and occupied several neighboring democracies, helped prop up other authoritarian regimes, used its vast natural resources to blackmail its neighbors, and sought to undermine Western democracies, including the U.S., with disinformation campaigns. Russia also maintains a military that is capable of challenging the U.S. and has worked to undermine NATO, the most successful alliance of democracies in the world.Congress has an important, but too often underutilized, role in the development and execution of national security policy. This report by the Republican Study Committee's National Security & Foreign Affairs Task Force presents a comprehensive blueprint for how Congress can fulfill its responsibility and includes more than 130 policy recommendations focused on strengthening America and countering our global threats.