The study follows the approach of Chen (2008) to explore which factors lead U.S firms to expand domestically through the choice of entry strategies during 1999 to 2005. The approach of Chen (2008) is to split entry mode choice into ownership and acquisition (vs. greenfield investment) on domestic expansion in the US. There is evidence that US firms with less financial constraints choose greenfield investment through full ownership. The study also found that firms should have better subsequent performance when the firm’s entry mode choice consists with prescription of the model.