The president’s 5-year-old grandson broke his leg while on a family ski trip in Aspen, Colorado, over the weekend.
Tristan, the son of Donald Jr., was reportedly rushed to the emergency room by Secret Service agents who were required to be with the first family while on the weekend getaway.
Former Secret Service agent and author Dan Emmett told Inside Edition: "There will be Secret Service agents going up on the chairlift, there will be Secret Service agents at the top of the slope and there will be Secret Service agents at the bottom of the slope. You can see on a 24/7 basis how intense these details become."
There are concerns that the Secret Service is being stretched too thin as it guards the president's children and grandchildren.
Agents already guard the White House as well as Trump Tower and Mar-a-Lago, where the president, first lady Melania and youngest son Barron were over the weekend.
"I don’t recall any protectee in modern history that has had so many children and grandchildren and others that requires Secret Service protection," Emmett said.
Even controversial senior advisor Kellyanne Conway receives her own Secret Service protection. Her code name is "Blueberry," a reference to her being crowned Miss New Jersey's Blueberry Princess when she was a teenager.
"I have no information that supports those tweets," Comey said.