https://thinkprogress.org/testimony-haunt-donald-trump-jr-a54a8c679268/
"Lying to Congress is a crime even if you are not under oath. Federal law prohibits making false statements to Congress. If false statements were made “knowingly and willfully” about “material facts,” it is punishable by up to five years in prison. Much of the questioning before the Senate Intelligence Committee that day focused on the meeting Trump Jr. arranged in Trump Tower in June 2016, after Trump was promised dirt on Hillary Clinton from the Russian government."