The US Supreme Court`s decision striking down a 32-year ban on handguns in Washington, D.C., has sparked a string of lawsuits across the country challenging the constitutionality of various gun regulations. Two suits in Chicago seek to have that city`s handgun ban declared unconstitutional. Three Chicago suburbs have voted to repeal their gun bans, while a fourth, Oak Park, is attempting to defy the court and keep its ban.

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