A group of Americans opposed to Israel’s naval blockade of Gaza is raising money online to pay for a ship from the United States to take part in a new protest flotilla scheduled to set sail for the Palestinian territory in September or October. In an appeal for money posted on the Web site UStoGaza.org, the activists say they are “planning to launch a U.S. boat to Gaza, joining a flotilla of ships from Europe, Canada, India, South Africa and parts of the Middle East.” They add that the American ship will be named after President Barack Obama’s second book:...