The presumptive Democratic presidential nominee wasn't specific about the intelligence he received and offered no evidence while addressing a virtual fundraiser with more than 200 attendees.

U.S. President Donald Trump accused China of seeking to meddle in the Nov. 6 U.S. congressional elections on Wednesday, saying Beijing did not want his Republican Party to do well because of his stance on trade.

The national security adviser's comments echo statements made by U.S. President Donald Trump Saturday morning on Twitter.