Who in the government has the power to review all laws and treaties of the U.S.?

The power to review all laws and treaties of the U.S. lies primarily with the Supreme Court, which can interpret and determine their constitutionality. This judicial review allows the Court to invalidate laws and treaties that conflict with the Constitution. Additionally, Congress and the President play roles in the legislative process and treaty-making, but it is the judiciary that ultimately ensures compliance with constitutional principles.