Former federal prosecutor Andy McCarthy said Friday that billionaire Elon Musk is likely within legal bounds with his America PAC’s $1 million sweepstakes for registered voters in key swing states. Philadelphia District Attorney Larry Krasner sued Musk on Monday over the giveaway, which allows one signatory of a petition to win $1 million daily. McCarthy, on “Fox & Friends,” said that because Musk is only mandating Americans to register to vote, not to cast ballots, the legal argument against him may be difficult to uphold. WATCH: https://rumble.com/embed/v5ivwfs/?pub=3rtroj “They’re calling i…