The immigrants were seen as part of a conspiracy to undermine America.

The NPR senior correspondent attacks the "phony leaders, dead-end movements and culture of failure that are undermining black America."

How "corporate greed and political corruption are undermining America."

Political correctness is undermining America.

The columnist describes "how corporate greed and political corruption are undermining America."

Some radicals even fantasize that they can undermine America.

Those articles asserted that "a cocaine-for-weapons trade supported U.S. policy and undermined black America."

She suggests that Jackson Pollock's drip canvases embodied "the spreading mental disorders and emotional alienation that undermined postwar America."

But this latest design change, however tasteful and charming at first glance, risks undermining America's compact with the world to define what money ought to be.

The Russians aim to undermine America through arms and drug traffic.