Trump calls out Cubs ownership: 'They better be careful'

Republican presidential front-runner Donald Trump took a shot at the ownership group of the Chicago Cubs on Monday morning.

Campaign financial reports show that Marlene Ricketts contributed $3 million to Our Principles PAC - a group that has spent millions publishing adds and videos opposing Trump.

The Ricketts family, headed by son Thomas, bought the Cubs in 2009 for roughly $875 million.

Trump easily won South Carolina's primary over the weekend and is expected to earn the Republican nomination.