Those who believe in limited government and reducing taxes have a new ally in South Carolina.

Americans for Prosperity, a national nonprofit that advocates on political issues but does not endorse candidates, already has opened offices in Columbia and Greenville and Monday night, opened its third field office in Mount Pleasant.

South Carolina Director Dave Schwartz said the group opened its first office in December and that its most recent office at 786 Johnnie Dodds Blvd. will be a place for grassroots activists to call home.

"We don't take opening state chapters lightly," he said. "South Carolina is a top-tier priority for us since we launched here last year."

The organization - funded in part by the billionaire political activists David and Charles Koch - has about 22,000 members and five employees in South Carolina, Schwartz said. Jordan Pace of Goose Creek will serve as the field director in the new office.

Schwartz said the group helped the recent effort to oppose a 1-cent sales tax increase for infrastructure that Greenville County Council considered putting before voters this fall.

Asked whether it also might rally opposition to the Charleston County School District's plan to extend its 1-cent sales tax for more school construction later this year, Schwartz said it is too soon to say.

"To be honest with you, we sort of haven't gotten our sea legs under us in the Lowcountry," he said. "We haven't done as much as we have Upstate."

As far as statewide issues go, Schwartz said Americans for Prosperity wants to see a reduction in the state's income tax and also is a big believer in school choice.

"A kid's ZIP code should not be their destiny," he said.

Schwartz, who lives in Mount Pleasant, said the group chose that town for its new field office in part because it offered quicker access to the Grand Strand.

Reach Robert Behre at 937-5771.