Since 2017, the president is a Republican, and Congress is also Republican-controlled, so the Republicans have more power in the federal government. There are still many powerful Democrats who can try to stop the Republicans from doing things that they believe will be bad for the country. Also, members of a party in power do not always agree on what to do. If enough people decide to vote against Republicans in the next election, they will lose power. In a republic like the United States, no party can do whatever they want. All politicians have to argue, compromise, and make deals with each other to get things done. They have to answer to the people and take responsibility for their mistakes.