I doubt that it's a single action that sustained four+ decades of impacts. More likely this is the concerted effort of capital to continually reign in threats.
>In 1971 more and more dollars were being printed in Washington, then being pumped overseas, to pay for government expenditure on the military and social programs. In the first six months of 1971, assets for $22 billion fled the U.S. In response, on 15 August 1971, Nixon issued Executive Order 11615 pursuant to the Economic Stabilization Act of 1970, unilaterally imposing 90-day wage and price controls, a 10% import surcharge, and most importantly "closed the gold window", making the dollar inconvertible to gold directly, except on the open market. Unusually, this decision was made without consulting members of the international monetary system or even his own State Department and was soon dubbed the "Nixon Shock".
