According to Wiktionary a libertarian as it relates to the United States is:
One who advocates liberty either generally or on a specific issue, e.g. “civil libertarian” (in favour of civil liberties).
(chiefly US) A believer in a political doctrine that emphasizes individual liberty and a lack of governmental regulation and oversight both in matters of the economy (‘free market’) and in personal behavior where no one’s rights are being violated or threatened.
(US, prefixed to “Republican”) a member of the Republican Party (especially a legislator) who emphasizes economic and Constitutional, rather than religious and personal, aspects of the party’s platform.
Kevin and I focus mainly on religious, economic, and Constitutional liberty issues.
Does this mean one must ascribe to Ron Paul libertarianism to be considered a libertarian? No. Where the definition says “lack” we would replace that with “limited” because we believe there need to be some sensible regulations but not excessive regulations which strangles our economy, hurts businesses, and is to the detriment of the common good. Kevin and I believe in a combination of Neal Boortz libertarianism, Ron Paul libertarianism, and principles of liberty which are aligned with Catholicism.