After the first reports of the former FBI director James Comey's highly critical 300-plus-page book emerged on Friday, US President Donald Trump slams him as a "weak and untruthful slime ball," even blames him for lying to the Congress under oath.
Kushner is the only current White House official known to be considered a key person in the probe. He is being investigated because of his meetings and other possible interactions with the Russian ambassador and a banker from Moscow.