In a nutshell:
The IRS created the
income tax liability in the Code of Federal Regulations. See 26
CFR 1.1-1.
Congress did not
enact any liability statutes for income taxes imposed by subtitle A of
the IRC.
Our fundamental
Right to Separation of Powers means that only Congress can make law:
http://www.supremelaw.org/ref/whuscons/whuscons.htm#1
Further reading:
http://www.supremelaw.org/sls/2amjur2d.htm
(see
Commissioner v. Acker)
http://www.supremelaw.org/press/rels/subpoena.htm (PAST DUE)
http://www.supremelaw.org/cc/eddings/subpoena.liability.htm
http://www.supremelaw.org/letters/irs.estopped.htm
http://www.supremelaw.org/sls/31answers.htm
http://www.supremelaw.org/sls/31Q&A.in.evidence.htm
http://www.supremelaw.org/ref/psta/memo.htm
http://www.supremelaw.org/lien.or.levy.htm
http://www.supremelaw.org/notice.of.deficiency.htm
http://www.supremelaw.org/cc/hicks/memo03.htm
http://www.supremelaw.org/cc/hicks/memo04.htm
http://www.surpemelaw.org/cc/schmeeckle/memorandum.htm
http://www.supremelaw.org/letters/irs.perjury.jurats.htm
http://www.supremelaw.org/cc/williamson2/appeal/injunction.htm
http://www.supremelaw.org/cc/erath/injunction.htm (PAST DUE)
http://www.supremelaw.org/cc/giordano/dissolve.irs.htm (PAST DUE)
http://www.supremelaw.org/press/rels/dismantle.irs.htm