He's already using them in questionable, barely legal ways. His supporters didn't care that he took money from his charity for his own use, they wouldn't raise an eyebrow no matter what he does with campaign funds. 

"Virtually no public information": Trump campaign pays over $3 million to mystery company"

"The owners of the limited liability company, called Launchpad Strategies LLC, are not publicly disclosed on campaign finance records, fitting with a strategy Trump’s campaign has used in the past to hide exactly whom the campaign is paying, NBC News reported."