Trump

or

Mr. Burns?

I’m searching for a suitable young heir to leave my fortune to. My vast, vast, vast, vast fortune.

Who said it?

You're right! Mr. Burns said this. Nope, sorry. Mr. Burns said this.

This is from The Simpsons: Season 5, Episode 18, entitled “Burns’ Heir” where Mr. Burns realizes he has no legal heir following a near death experience.