Made in America: it’s a phrase that means a lot these days, when outsourcing is all the rage and very little, it seems, comes manufactured on American soil by hardworking American hands. And when it comes to the Big Three, GM appears to be the most patriotic of the automakers.

According to a recent Automotive Index report by American University’s Kogod School of Business, General Motors ranked first for its ability to meet the various assorted criteria. Created by Frank Dubois, a global supply chain management expert and professor at American University, the index ranks Ford, GM, and Chrysler as a whole, starting from R&D and extending all the way to profit margin.

Research for the index is based upon seven data points: profit margin, or the location of the company’s headquarters, be they American or foreign; labor, or the location of assembly; R&D, or the location of where such activities take place; transmission assembly location; engine assembly location; inventory, capital, and other expenses; and the Labeling Act “Domestic Content” score, which was enacted by Congress to help consumers determine where their vehicle was built. The Labeling Act denotes an “American” vehicle as one which has 75 percent or more American or Canadian manufacture.

In the case of GM, they have the most vehicles which fit all these criteria, including the Chevrolet C7 Stingray, Traverse, Malibu, Impala, Tahoe, and Suburban, as well as the GMC Savana, Acadia, Acadia Denali, Terrain, and Yukon, and don’t forget the Cadillac CTS, Escalade, and ATS and Buick Enclave and LaCrosse–making the grand total eighteen vehicles. “This index undoubtedly provides Americans with a more defined explanation of the actual origin of a vehicle and its purchasing impact on the U.S. economy,” said Gerald Johnson, GM North America Manufacturing vice president.

Competitors Ford and Chrysler only had four and six, respectively. So what does “Made in America” mean to you? Leave your two cents below.