Congress worries that legal hassles may shut down the wireless e-mail service that it now depends on. Should the government seize the technologies necessary for public safety? As if members of Congress didn’t have enough trouble communicating with each other, a lawsuit now threatens to shut down their handheld e-mailing system. In November, a federal court ruled that Research in Motion, the Canadian company that makes BlackBerrys, infringed on a patent held by NTP, of Arlington, Virginia. The jury awarded NTP $23 million, but the Virginia company wants more, including an injunction that could force BlackBerry to go dark. Congress, evidently, is afraid of that dark. Full Story