President Donald Trump has a bully pulpit that no president has used: Twitter.

He uses it to "blow off steam," criticize his opponents and colleagues, and yell obscenities and ridicule at whomever he likes.

Twitter can be used for good to send expressions of a person's stand on a certain issue. But Trump only causes dissent, chaos and confusion when he tweets. How often does he change his mind about an issue?

It makes him, and us, look weak in the eyes of the world.

Particularly at this time in the United States' history, we need a president who can bring us together and act with dignity and intelligence. Instead, Trump is crude and lowers our standing in the world.

If Trump cannot bring himself under control and follow decent rules, the company Twitter should expel him and not let him return.

John Murphy, Madison