RIVERSIDE, California: The Jordanian business partner of a prominent Florida businessman, who has raised more than $500,000 for Senator John McCain, appears to be at the center of a cluster of questionable donations to his Republican presidential campaign. Campaign finance records show that McCain collected a little more than $50,000 in March from members of a single extended family, the Abdullahs, in California and several of their friends. Amid a sea of contributions to the McCain campaign, the Abdullahs stand out. The checks come not from the usual well-off coastal addresses, but from lower-income inland California towns like Downey and...