Sampson pleaded not guilty and was released on $250,000 bond.
The FBI says Greenwich Avenue resident Robert Asch, 61, plotted to torture and kill his victims.
Charges may hurt black and Latino elected officials seeking to increase their numbers and gain clout.
Bronx Assemblyman Stevenson was arrested Thursday and Assemblyman Nelson Castro resigned.
U.S. Attorney Preet Bharara left dirty New York politicians shaking in their boots wondering who's next.
The undercover agent who snared Malcolm Smith passed himself off as a wealthy investor.
Vincent Tabone and other GOP leaders were arrested in a bribery scheme to elect Sen. Malcolm Smith mayor.
State Sen. Malcolm Smith and City Councilman Dan Halloran were arrested early Tuesday, the FBI said.
The state senator, who advocated for a new healthcare lab in Jamaica, was arrested April 2, 2013.
The small, flying object was spotted about 3 miles from the airport Monday, the bureau said.
Three men were charged with trying to pass off the generic parts as brand name goods, officials said.
Lawyers and staff from at least 10 law firms are accused of creating false asylum applications.
Gilberto Valle, denied bail, is heading to trial Jan. 22.
Gilberto Valle, 28, faces a maximum sentence of life in prison.
Adis Medunjanin was convicted of conspiring with Al Qaeda.
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