Boomers love Asian immigrants but read this article and look at statistics: its the Asian immigrants that are part of the problem of NoVa being so Dem now.
Population density drives leftism. As people live closer together, more government and rules are required. American freedom goes out the window. So yes, immigrants drive bigger government, but indirectly. There's no major genetic disposition for leftism. It's how tightly people are packed in. Many immigrants come from high density cities and move to high density cities.
Cities used to have optimum economies of scale but new technology has been pushing the optimum point many miles out from the city centers. Due to the growing federal government, NoVa is over-densely populated now. At some point though people come to their senses and move away. The massive immigrant pipeline is used to fill the cities back up so they aren't forced into immediate bankruptcy.
Everything changes constantly, but thankfully humans are not plant life and can move. It's much easier to move to where you like than to force millions of people to move for you.