Since Inauguration Day, President Donald Trump has been moving quickly.

According to Mark Cuban, billionaire investor, star of ABC's "Shark Tank" and owner of the Dallas mavericks, that calls into question Trump's skill as a manager.

In particular, Cuban says that Trump's travel ban, dropped late on Friday night, was a blunder.

"It's horrible! Look, let's just be real clear. The ban was half-a--ed and half-baked," says Cuban, speaking to CNN's Erin Burnett.

"If the goal was security, why do you leave off any other countries that hosted terrorism? That's like locking your front door and leaving all your windows open."

The executive order indefinitely bars Syrian refugees from entering the country, suspends all refugee admissions for 120 days and blocks citizens of seven majority-Muslim countries — Iraq, Syria, Iran, Sudan, Libya, Somalia and Yemen — from entering the country for 90 days.

That Trump signed the order before carefully considering the consequences was, Cuban says, a red flag.

