Elon Musk could threaten free speech by literally allowing people to speak freely.

[N]o such banking institution or branch shall pay out, export, earmark, or permit the withdrawal or transfer in any manner or by any device whatsoever, of any gold or silver coin or bullion or currency or take any other action which might facilitate the hoarding thereof; nor shall any such banking institution or branch pay out deposits, make loans or discounts, deal in foreign exchange, transfer credits from the United States to any place abroad, or transact any other banking business whatsoever.