If Schiff made his statements about Isaac from the House floor, he has complete immunity. If he said damaging things about Isaac outside of Congress, then he might be liable for damages caused.
Schitff is a media whore. 100 to 1 he slandered the guy on msnbc
If Schiff made his statements about Isaac from the House floor, he has complete immunity.
Another example of how these detestable people get away with spreading lies, defaming people, and know they are doing it without consequence.