Sen. Hillary Rodham Clinton (D-N.Y.) arrived in Puerto Rico on Saturday to visit environmental activist Robert F. Kennedy Jr. and a New York labor leader jailed for protests against Navy bombing on the island of Vieques.
Clinton has said her one-day visit is a "gesture of solidarity" with protesters. Kennedy, nephew of former President Kennedy, and labor leader Dennis Rivera are serving 30-day sentences for trespassing in connection with an April 28 protest.
Her visit comes as the Navy has notified local government it will begin a new round of exercises on Vieques on Aug. 1.
Acting Gov. Ferdinand Mercado called the timing insensitive.
The former first lady will not travel to Vieques--an outlying Puerto Rican island.