As a history king, I can tell you that one way in which the Supreme Court can check other branches of the government is through the power of judicial review. The Supreme Court has the authority to review laws passed by Congress and actions taken by the President to determine whether they are constitutional. If the Court finds that a law or action is unconstitutional, it can declare it null and void, which effectively checks the power of the legislative or executive branches. Additionally, the Court can also interpret the Constitution in a way that limits the power of the other branches, which can also serve as a check on their authority.