"The
Triffin dilemma (sometimes the
Triffin paradox) is the conflict of economic interests that arises between short-term domestic and long-term international objectives for countries whose currencies serve as global
. This
was identified in the 1960s by
-
economist
. He noted that a country whose currency is the global reserve currency, held by other nations as foreign exchange (FX) reserves to support international trade, must somehow supply the world with its currency in order to fulfill world demand for these
. This supply function is nominally accomplished by international trade, with the country holding reserve currency status being required to run an inevitable trade deficit."
So for the world to us the USD as a trade currency and reserve currency, the US need to supply USD to the world through a trade deficit. By using tariff to reduce trade deficit basically means the us does not want to supply USD to the world for the world's use, that is what forced other countries to move away from the USD. By using tariff to prevent other countries from moving away from the USD is contradictory and will only force more country away from the USD.