Pub. L. 107-90, tit. II, sec. 202
EXEMPTION FROM TAX FOR NATIONAL RAILROAD RETIREMENT INVESTMENT TRUST.
SEC. 202. EXEMPTION FROM TAX FOR NATIONAL RAILROAD RETIREMENT INVESTMENT TRUST. Subsection (c) of section 501 is amended by adding at the end the following new paragraph: “(28) The National Railroad Retirement Investment Trust established under section 15(j) of the Railroad Retirement Act of 1974.”.115 STAT. 891