The Warren court other than Brown vs Board of educations mostly extended the provisions in the Constitution protecting people from the federal government to state and local governments.The only one that still controversial is the one about state-sponsored school prayer. ( the abortion decision was not under the Warren Court)
In Gulf of Tokin, Resolution Congress gave the president to power to wage war without a formal declaration of war, and it has been done by other presidents since then to send our military into other countries. Truman had also done it in Korea, so it is not clear that it was the resolution that made the difference or that fact that the US had assumed new responsibilities in the world after WWII
Congress still has the power not to fund any program and the President has the power not to enforce laws and the court has no power beyond the traditional deference the other branches, the military, and the people give it. In countries where the government stops obeying their Constitution, It is the military that has been the institutions that decides who gets to rule
