Is is the law or just protocol that flags be flown at half-staff upon the death of a president?

[mahatmakanejeeves]

2. All I can find is proclamations, not a part of the US Code.

Anybody?

Google: Proclamation 3044, 3 CFR, 1954-1958 Comp., p. 4

https://www.google.com/search?q=Proclamation+3044%2C+3+CFR%2C+1954-1958+Comp.%2C

Richard Nixon
37th President of the United States: 1969 ‐ 1974
Proclamation 3948—Amending Proclamation No. 3044 With Respect to Display of the Flag of the United States of America at Half-Staff Upon the Death of Certain Officials and Former Officials
December 12, 1969

By the President of the United States of America

A Proclamation
I, Richard Nixon, President of the United States of America and Commander in Chief of the armed forces of the United States, do hereby proclaim that Proclamation No. 3044 of March 1, 1954, prescribing rules with respect to the display of the flag of the United States of America at half-staff upon the death of certain officials, is amended by substituting for subsection {c} of section 1 thereof the following:

"{c} An Associate Justice of the Supreme Court, a member of the Cabinet, a former Vice President, the President pro tempore of the Senate, the Majority Leader of Senate, the Minority Leader of the Senate, the Majority Leader of the House of Representatives, or the Minority Leader of the House of Representatives: from the day of death until interment."

In Witness Whereof, I have hereunto set my hand this twelfth day of December, in the year of our Lord nineteen hundred and sixty-nine, and of the Independence of the United States of America the one hundred and ninety-fourth.



RICHARD NIXON

Richard Nixon, Proclamation 3948—Amending Proclamation No. 3044 With Respect to Display of the Flag of the United States of America at Half-Staff Upon the Death of Certain Officials and Former Officials Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/287243