CHILTUIPAN, LA LIBERTAD, EL SALVADOR - 2021/06/07: A five US Dollar bill is seen next to a phone ... [+] displaying an application used to transfer Bitcoin. Salvadoran President Nayib Bukele has announced that he will propose a law to the Congress, where his party controls a majority, for Bitcoin to become legal tender. El Salvador would become the first country in the world to accept a cryptocurrency as a legal tender. (Photo by Camilo Freedman/SOPA Images/LightRocket via Getty Images)SOPA..