Donald Trump is warning the family who owns the Chicago Cubs over spending against him.

Marlene Ricketts, an owner of the Chicago Cubs, donated $3 million to Our Principles PAC according to FEC filings. The PAC -- which is run by former Mitt Romney adviser Katie Packer -- has a sole goal of taking down Trump....

The New York billionaire tweeted Monday “I hear the Rickets [sic] family, who own the Chicago Cubs, are secretly spending $'s against me. They better be careful, they have a lot to hide!”