Is cloning legal in the United States?

The USA voted for the adoption of the United Nations Declaration which advises members to prohibit human cloning.

However, back home in the 50 United States of America, only 15 states have made cloning illegal. Source NCSL.org So, Americans are divided on this issue, and therefore, one can imagine America being a country where people could be cloned routinely, if and when the methods are developed and standardized.