Maher Tarabishi was the primary caretaker of his son, Wael Tarabishi, 30, who died on Friday, Jan. 23, from complication

Prosecutor Patrick Fitzgerald, 64, served as a US attorney in Chicago for more than a decade, and he is a longtime friend and former colleague of Comey, 64.

The hearing would give Susan Monarez a high-profile opportunity to respond to Robert F. Kennedy Jr.’s claims about her ethics and their conversations about vaccines.