An African-American millionaire can buy a home in any expensive suburb. Color is no longer a barrier. Despite this progress, President Obama's Department of Housing and Urban Development is accusing expensive towns of racism, simply because most minorities can't afford to live there. Westchester County, N.Y., has struggled since 2009 under a plan by a federal monitor to compel the county to comply with HUD's demands for multiunit affordable housing in expensive areas. Hillary Clinton claims to be a warrior against inequality. But her adopted hometown of Chappaqua, an upscale Westchester village that one resident describes as "a little piece...