Richard Nixon actually said...
It is hereby ordered that any income, excess-profits, estate, or gift tax return for the years 1950 to 1969, inclusive, shall, during the Ninety-first Congress, be open to inspection by the Committee on Internal Security, House of Representatives, or any duly authorized sub-committee thereof.
Context
Executive Order 11465—Inspection of Income, Excess-Profits, Estate, and Gift Tax Returns by the Committee on Internal Security
04/09/1969