The site navigation utilizes arrow, enter, escape, and space bar key commands. Left and right arrows move across top level links and expand / close menus in sub levels. Up and Down arrows will open main level menus and toggle through sub tier links. Enter and space open menus and escape closes them as well. Tab will move on to the next part of the site rather than go through menu items.
EXPLANATION OF H.R. 25: A BILL TO SIMPLIFY THE INTERNAL REVENUE CODE OF 1954 BY REPEALING PROVISIONS WHICH ARE OBSOLETE OR ARE UNIMPORTANT AND RA...
General Explanation Of The Tax Reform Act Of 1969, (H.R. 13270, 91st Congress, Public Law 91-172).
REVENUE ESTIMATES RELATING TO THE HOUSE, SENATE, AND CONFERENCE (ENACTED) VERSIONS OF H.R. 13270: TAX REFORM ACT OF 1969, PUBLIC LAW 91-172