What were some reasons for the opposition to the Articles of Confederation?

The Articles of Confederation was the name given to the agreement made by the 13 original states of the United States. The main reason for opposition was that it required the states to give up any claims they had to lands further west. Some also felt that the Articles were too weak to make the United States effective, as there was nothing in the document about governance in terms of who would be president and how the judicial system would be handled.