It is like Nixon said, "no event in American history is more misunderstood than the Vietnam War." I can't give a clear answer but I do have some food for thought which may paint a big picture.
1. You have to keep in mind that Vietnam was not about who killed more troops.
If the winner of the Vietnam war was declared by who killed more troops than the U.S. would win hands down. The U.S. casualties were roughly half a million, where as the Vietcong suffered a little more than a million. Then how did we lose?
2. Keep in mind that at this time technology has improved and Vietnam is the first war where people are watching it go on right at home on there television screen.
They are seeing their sons being shot and viewing dead soldiers every single day.
You did not see this in WW1 or WW2 or the Korena War.
Answer and Explanation:
The Supreme Court in Worcester v. Georgia analyzed that the Cherokee Nation was considered a separate political entity that could not be run by the state. Georgia's license law was illegitimate, and Worcester's conviction should be overturned. Dating back of early colonial America, the Native American communities were conceived of as "separate nations,” the Court first pointed to evidence. The Court then claimed that today's "treaties and laws of the United States [also] contemplate the Indian territory separated from that of the states, and provide that all intercourse with them shall be carried on exclusively by the government of the union."
That is why the United States can negotiate the terms of Indian lands and the use of thence. States were shortfalls of constitutional power to deal with such "nations" at all. Thus, Georgia could not pass the license law. Moreover, it also could not convict Worcester for violation of the law.