No. The POTUS as part of the Executive Branch serves to Execute laws Legislated by Congress as the Legislative Branch. The Supreme Court or a lower court could

No. The POTUS as part of the Executive Branch serves to Execute laws Legislated by Congress as the Legislative Branch. The Supreme Court or a lower court could Judge the law to be unconstitutional as the Judiciary Branch, and to that end the POTUS can nominate judges and the Senate can approve or deny them. The only thing POTUS can unilaterally enact and/or revoke are Executive Orders, which themselves are grounded in laws Legislated by Congress and Judged by the courts as necessary.