Former prisoner Don Blakenship, who was CEO of Massey Energy company when a 2010 explosion claimed the lives of 29 miners, is seeking the presidential nomination of the far-right Constitution Party. Blankenship previously mounted an unsuccessful campaign for a West Virginia senate seat.
McGrath's ad slamming McConnell for having "left our coal miners behind years ago" gets heavy traction on social media.
The president's administration used a controversial Obama-era measure called "hot goods," which allows the Labor Department to freeze the movement of items created by laborers who have not been paid.
For decades, presidents, lobbyists and policymakers have invoked the image of coal miners.
The West Virginia Democrat that Pence touted as proof of Democrats swinging Republican is a Democrat in name only.
President Trump is putting coal miners back to work, but experts say he's doing it at the expense of their health and safety.