If Trump were home he would have secret service with him as all ex presidents do. When unknown armed men in uniform or plain cloths come near the president a firefight is very likely.
The Secret Service were there and the FBI knocked, and the Secret Service, appropriately let them in.
This article strongly implies that the Daily Caller has SEEN the warrant, and yet the only thing they can write about is the date?
How about THE CONTENTS OF THE WARRANT?