sentences:  This has the effect of increasing the supply of labor in that nation's market.This type of labor importation may be advantageous.According to the National Venture Capital Association (NVCA), a registered political action committee, over 25% of all startups responding to an NVCA survey, in the San Francisco Bay Area of the US in the last 15 years were "immigrant-founded" (most likely former or current H-1Bs).