Former U.S. Vice President Mike Pence wants to become president of the United States.

The Republican filed the necessary documents with the Federal Election Commission on Monday. Pence's official announcement of the presidential bid is expected this Wednesday. The 63-year-old is also challenging his former boss Donald Trump (76), who wants to run again after his defeat in 2020. The two have a difficult relationship - and a mixed past together, writes CNN's John Defterios.. Mike Pence is deeply religious, likes to talk a lot about religion, cultivates the image of the good public servant.