Sam Bankman-Fried again pleaded not guilty in his fraud case over last year’s implosion of the FTX cryptocurrency exchange, this time to a narrower slate of charges, as his lawyers fought for access to their jailed client. The 31-year-old embattled crypto mogul appeared in federal court in Manhattan on Tuesday for the first time since a judge revoked his bail after concluding that he likely tried to tamper with two witnesses.