Discovery Channel's "Dirty Jobs" star Mike Rowe will appear as a witness before the Senate on Wednesday at a hearing titled "Manufacturing Our Way to a Stronger Economy," talking up the know-how and skill of American workers. (Discovery Channel) ** FILE **

Photo by: Blaine Fisher

Discovery Channel's "Dirty Jobs" star Mike Rowe will appear as a witness before the Senate on Wednesday at a hearing titled "Manufacturing Our Way to a Stronger Economy," talking up the know-how and skill of American workers. (Discovery Channel) ** FILE **