The Parliament, of the Dominion of Canada, passes the Provincial Power Commission Act, nationalizing the Ontario Hydro-Electric Power Commission.  This is the first such nationalization of an electric utility in the history of the world.

       [added 5/29/2022] Thanks to the Freedom Party of Ontario for this entry.

Subsequent Events:

References:

Freedom Party of Ontario (CANADA) – May
www.freedomparty.org/calendar/cal_may.htm

Wikipedia: Hydro-Electric Power Commission of Ontario
en.wikipedia.org/wiki/Hydro-Electric_Power_Commission_of_Ontario

Current U.s. National Debt:

$36,167,124,467,492

Source