Nation Questions about Mar-a-Lago search? Here’s how warrants, subpoenas and grand juries work August 9, 2022August 9, 2022Kevin McCoy, USA TODAYComments Off on Questions about Mar-a-Lago search? Here’s how warrants, subpoenas and grand juries work The FBI's search of former President Donald Trump's Florida home raises questions about search warrants, subpoenas and grand juries. We have answers.