H.R. is often mistaken to mean House Resolution. It doesn't. It means simply "House Of Representatives"..
H.R. House Bill
S. Senate Bill
H.J.Res. House Joint Resolution
S.J.Res. Senate Joint Resolution
H.Con.Res. House Concurrent Resolution
S.Con.Res. Senate Concurrent Resolution
H.Res. House Simple Resolution
S.Res. Senate Simple Resolution
Source: http://www.gpoaccess.gov/bills/glossary.html
This information can also be found on the Library of Congress online website and its associated subsite called "Thomas" at http://www.loc.gov/index.html
The Ninth and Tenth Amendments do not guarantee rights and thus there is an ongoing debate about the meaning of these amendments. The meanings of these amendments are quite ambigous because of the language and there are consequently numerous interpretations. For example, the Tenth amendment was designed to reserve powers to the states and two theories about this amendment were that it states the nature of American federalism but adds nothing to the Constitution as originally ratified and that it protects the powers of the states against national government.
Twenty-seventh Amendment to the United States Constitution was submitted to the states by ratification.
A Member of Congress