Europe, the Rothschild founded Central Banking Cartel's power comes from currency & usuary rate control, so they don't take any threat to that power lightly. JFK had character on that matter, and decided to stand against the private Federal Reserve. I believe that stand resulted in his assassination.
From Wikipedia...
"Executive Order 11110 was issued by U.S. President John F. Kennedy on June 4, 1963.
This executive order delegates to the Secretary of the Treasury the president's authority to issue silver certificates under the Thomas Amendment of the Agricultural Adjustment Act.
The order was for the Treasury to issue silver certificates against all silver held by the government which did not already have certificates against it. The order was needed due to the passage of Public Law 88-36 which repealed the Silver Purchase Act and other related monetary measures. One result was that after the repeals, only the President could issue new silver certificates.[citation needed]
The Federal Reserve System could replace the certificates, but only in larger denominations. The thrust of the order returned the authority to issue new silver certificates (and specify denominations) back to the U.S. Treasury.
This executive order allowed for the Federal Reserve System to distribute and exchange currency at lower denominations that met the growing economic need.
The authoritative basis for the Order was substantially nullified on September 13, 1982 with the passage of Law 97-258.
On September 9, 1987, Executive Order 12608 revoked the section that Executive Order 11110 had added to Executive Order 10289, essentially nullifying the order. This executive order is the subject of one of many conspiracy theories concerning the assassination of President Kennedy, with the claim that it was the" first step in a plan to close
the Federal Reserve Bank."
JFK's EO 11110