The Democrat-turned-independent, Robert F. Kennedy Jr., is walking the road to the White House without the Secret Service protection offered to other candidates. His campaign suspects that the denial is dangerous political gamesmanship by the Biden administration aimed at punishing a rival.

“It is impossible to know for sure,” a campaign representative for Mr. Kennedy tells the Sun, “but it appears that the unprecedented withholding of Secret Service protection is designed to drain campaign funds, and to adversely affect the campaign’s logistical effectiveness.”