1. sell off Federal lands to private US citizens.
2. eliminate entire US Federal Departments.
3. Stop illegal immigration at border.
4. Stop sending Earned Income credit payments to MX for bogus dependent children.
5. Open up some Federal Parks systems to oil and precious metals production.
6. Force Congress to telecommute most of the year. Make a wasteland of the leach system in DC.
Yes, it is believable it could be done.
Okay. That is a few billion. Now how do you get to trillions every year and oh yeah in a way that gets you elected. Take the rose colored glasses off. And oh BTW stopping the illegals at the border actually costs lots of money.