What was the final step of President Polk's plan to defeat Mexico?

What was the result of the supreme court ruling in gibbons v. ogden the court supported the establishment of a national bank and prohibited states from taxing the bank. the court decreased the power of the federal government by restricting steamboat travel to within a state. the court decreased the power of the federal government by allowing states to tax the national bank. the court defined interstate commerce and declared federal law supreme over state law.