Alexander Hamilton was a member of the Federalist Party, which means he was advocating for a strong central government. Hamilton was a major writer of The Federalist Papers, which became enormously influential in the debate regarding the form and function to be given to the new government being created to replace the one shaped by the Articles of Confederation.
Hamilton agreed with those who felt that consolidating national concerns under the control of a strong national government was essential to assuring the success of the country.
A government ought to contain in itself every power requisite to the full accomplishment of the objects committed to its care, and to the complete execution of the trusts for which it is responsible, free from every other control but a regard to the public good and to the sense of the people.
He understood the concern about a centralized government becoming excessively powerful and was careful to delineate limits on the power of that government through the use of a federal system of organization that divided and balanced governmental powers and responsibilities between different branches. Hamilton sympathized with the need to preserve power for the individual states where possible.
the State governments would clearly retain all the rights of sovereignty which they before had, and which were not, by that act, EXCLUSIVELY delegated to the United States.