Now sometimes I ask myself if politicians just say those things to gain votes, a likely possibility, or if they are really that ignorant about how their own currency works? As it seems incredible that a presidential candidate could say such a thing when it should be obvious this is not possible.
It's only an attempt to gather votes from crypto enthusiasts, and libertarians alike. There's no way the USD can be backed by Bitcoin or Gold now nor in the future. The damage is already done. Politicians usually lie to get what they want. Once they're elected, their promises quickly fade into oblivion.
I would take Mr. Kennedy Jr.'s comments with a grain of salt. Besides, what use would it make to have a Bitcoin-friendly US President, when members of Congress are against it? Even government agencies could have someone in charge that doesn't like Bitcoin (eg: Gary Gensler of the SEC). When most governments officials support Bitcoin and crypto/Blockchain tech, will the day when the US would've finally embraced the revolution with open arms. Who knows what the future will look like? Just my opinion