Independent presidential candidate Robert F. Kennedy Jr. said he wants to put the “U.S. budget on blockchain‚” a ledger of transactions typically associated with bitcoin and other cryptocurrencies. “I’m going to put the entire U.S. budget on blockchain so that any American — every American can look at every budget item in the entire budget anytime they want 24 hours a day‚” Kennedy said Sunday during a rally in Michigan. The public accounting of spending would theoretically allow more...