The US confiscated all physically-held gold (you got to keep $100) from US citizens in the '30s.
http://www.lewrockwell.com/anderson/anderson154.html
Thus, early in his presidency, on April 5, 1933, Roosevelt signed Executive Order 6102, which ordered people to turn in their gold to the government at payment of $20.67 per ounce. While there were some exceptions for dental use, jewelry, and artists and others who used gold in their jobs, most people were not covered. (Individuals could hold up to $100 in gold coins, but the government confiscated the rest.)
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Roosevelt attempted to put “teeth” in his order by means of Section 9 of the order, which said that anyone who refused to comply could be fined as much as $10,000 or be sentenced to a maximum of 10 years in prison. (Most Americans did not resist, although some simply hid their gold until the order was repealed 41 years later)