The United States shares the repugnance at any attempt to glorify or otherwise promote Nazi ideology. However, this resolution fails to distinguish between actions and statements that, while offensive, should be protected by freedom of expression, and actions that incite violence, which should be prohibited.

The United States remains convinced that governments should not punish speech, even that which is deemed offensive or hateful. In a free society hateful ideas fail on account of their own intrinsic lack of merit. Curtailing expression is not a viable or effective means of eliminating racism and related intolerance.

http://www.state.gov/r/pa/prs/ps/2009/02/119837.htm