The "Line 5 Act" is designed to legally enforce adherence to an existing international agreement between the United States and Canada. It explicitly prohibits the President or any designated official from violating any provision of the 1977 Agreement Concerning Transit Pipelines , signed in Washington. This bill aims to ensure the executive branch upholds its obligations under the bilateral treaty, thereby preventing any actions that could undermine the agreement's terms. Its purpose is to safeguard the operational framework established for transit pipelines between the two nations.