Trump warns Chicago Cubs owner about spending against him

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

CHICAGO -- A member of the Ricketts family is giving millions to a super PAC targeting Donald Trump.

USA Today reports Marlene Ricketts, the wife of T.D. Ameritrade founder Joe Ricketts, gave $3 million to Our Principles PAC.

It's been airing ads against Trump and sending out mailers ahead of states' primaries.

Trump responded a tweet that reads: "I hear the Rickets family, who own the Chicago Cubs, are secretly spending money against me. They better be careful, they have a lot to hide!"

The Ricketts family is not commenting.

Notice: you are using an outdated browser. Microsoft does not recommend using IE as your default browser. Some features on this website, like video and images, might not work properly. For the best experience, please upgrade your browser.