The device arrived at the Tribeca Grill in Manhattan early on Thursday local time, US media said, citing police.
Former Vice-President Joe Biden has also reportedly received packages.
If linked to previous incidents, this would be the ninth perceived critic of President Donald Trump to receive a suspected explosive device this week.
Update: An suspect has been arrested, according to NYT story with the byline “Van With Pro-Trump Stickers Seized”
Speaking on CNN on Friday, Mr. Clapper said he was not surprised that a device had been sent to him. He has been a frequent critic of President Trump, a similarity shared with everyone whose names have appeared on the packages discovered so far.
“This is definitely domestic terrorism,” Mr. Clapper said. “Anyone who has in any way been a critic, publicly been a critic of President Trump, needs to be on an extra alert.”
The regime leader meanwhile, in an attempt to condemn terrorism, instead lashed out again at his critics and denied having accountability for lashing out at his critics
“Funny how lowly rated CNN, and others, can criticize me at will, even blaming me for the current spate of Bombs and ridiculously comparing this to September 11th and the Oklahoma City bombing, yet when I criticize them they go wild and scream, ‘it’s just not Presidential!'”