Shortly after taking office, during the depression, Franklin D. Roosevelt, under Presidential Executive Order number 6102, confiscated all privately held Gold in the United States on April 5, 1933:

….Congress declared that a serious emergency exists,
I as President, do declare that the national emergency still exists;
That the continued private hoarding of gold and silver by subjects of
the United States poses a grave threat to the peace, equal
justice, and well-being of the United States; and that appropriate
measures must be taken immediately to protect the interests of our people.
“Therefore, pursuant to the above authority, I hereby proclaim that such gold
and silver holdings are prohibited, and that all such coin, bullion
or other possessions of gold and silver be tendered within fourteen days
to agents of the Government of the United States for compensation at
the official price, in the legal tender of the Government.

All safe deposit boxes in banks or financial institutions have been sealed,
pending action in the due course of the law. All sales or purchases
or movements of such gold and silver within the borders of the United
States and its territories, and all foreign exchange transactions
or movements of such metals across the border are hereby prohibited.
“Your possession of these proscribed metals and/or your maintenance
of a safe-deposit box to store them is known to the Government from
bank and insurance records. Therefore, be advised that your vault box
must remain sealed, and may only be opened in the presence of an agent
of The Internal Revenue Service.
“By lawful Order given this day,
the President of the United States.”

Goldfinger – what else.