The U.S. Justice Department has filed an antitrust lawsuit against Visa, alleging that the financial services behemoth uses its size and dominance to stifle competition in the debit market.

Former President Donald Trump demanded attorneys general in GOP dominated states investigate former Speaker Nancy Pelosi because her husband sold Visa shares.

"Anyone who has bought something online, or checked out at a store, knows there is an ever-expanding universe of companies ...

Paul Pelosi sold Visa stock before the DOJ filed an antitrust lawsuit against the company. Donald Trump suggests Nancy Pelosi was aware of the lawsuit.