Central banks print money and use it to buy U.S. equities. Ownership of U.S. equities entitles the holder to a vote. It is illegal for USG to own equities because socialism. It probably isn't illegal for USG to tell the Swiss National Bank how to vote its shares.
Not that it would ever do that.
"Mystery" Buyer Revealed: Swiss National Bank's US Stock Holdings Rose 50% In First Half, To Record $62BN
Trump Administration open thread - Tell us your thoughts.
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