Judicial review gives the supreme court the power to check over laws and and actions from Congress and the President to determine whether they are constitutional .
Explanation:
This is part of the checks and balances that the three branches of the federal government use in order to limit each other and ensure a balance of power.
an excuse for the american government to drive out the native populous from the land, and develop economic opportunities in the west, especially the prospect of gold and oil in California, and the relative proximity to Asia from the west coast.