Taiwan is holding it’s presidential election this weekend and the United States has sent 2 aircraft carrier battle groups to the Taiwan region for training exercises. The U.S. has typically deployed carrier battle groups around Taiwan to basically discourage China from doing anything “provocative”. If you’re not familiar, China as repeatedly stated that Taiwan is a province of China and that if Taiwan declares independence, it will use force if necessary to bring Taiwan under its rule. This would basically entail a full-scale invasion of Taiwan. In the past China has sought to influence Taiwan’s elections by trying to intimidate the electorate, sometimes firing missiles into the Taiwan Straight.
More information about the deployment here: