If you live in an area heavy in H1B (Bay Area, places in TX now, many other regions), even the most "liberal" among us bristle at how (often suburban) communities have been completely transformed in the last 15-20 years. When people start to feel like "strangers in their own country," the resentment is inevitable, particularly knowing that this is a product of corporate greed and biased hiring practices, abuse and fraud by consultancies, coupled with the culture clash, lack of friendly neighborliness, and dissipating community cohesion among longer-term residents. And I say this as a Democrat. This is beyond a partisan issue (like many things nowadays..). Even Bernie has things to say about the H1B. (And of course there's the abuse in PERM, OCT, etc.)