Because if they don't we'll get into another civil war, and we don't want that again.
The states must obey the rules and laws of Federal Government.
Did congress have the power to manage foreign affairs
It’s a promise that we do to always obey the law and the constitution of the United States of America.
-Obey the laws of government -Vote
All states are subject to Federal Laws and obey them.
collect taxes, establish a military, form courts, or make the states obey the laws
Some states believed in the doctrine of states rights in which they did not have to obey Federal Laws if they felt that it violated the constitution.
serve (do important work for) the nation (if needed), serve in the U.S. military (if Needed)
To obey its laws.
Constitution
They couldn't enforce laws because they gave the states too much power. If they were to have a law, the only way for it to pass was if the 9 states voted in favor of it.
Some states believed in the doctrine of states rights in which they did not have to obey Federal Laws if they felt that it violated the constitution.