Democratic presidential hopeful Tom Steyer just vowed to raise the minimum wage to $22 per hour if he gets elected.

A Fox news article chronicled his announcement, originally made during a campaign block party on Sunday in South Carolina.

The current minimum wage is set at $7.25 per hour at a federal level, though many states have raised it to compete with higher costs of living.

Steyer, a billionaire whose campaign is focused on tackling environmental issues, joins other candidates like former Vice President Joe Biden and Sens. Bernie Sanders (I-Vt.) and Elizabeth Warren (D-Mass.) as they advocate a $15 per hour minimum wage.

Politico reports that Steyer has reportedly spent approximately $14 million in television and radio ads in South Carolina, and he sees the state as crucial to his campaign’s success as his fellow candidates focus on the New Hampshire primary.