Action on energy by US President Barack Obama will partly answer the biggest question raised by sweeping Republican victories in midterm elections Nov. 2: Will the president acknowledge this repudiation of his liberalism and change course accordingly?Republicans, demolished only 2 years earlier in elections that wafted Obama into the White House, have regained control of the House of Representatives and increased by six the number of seats they occupy in the Senate. They also displaced Democratic governors in at least 10 states, with elections in six other states undecided at this writing. Among partisan state legislative chambers, 60 of which were controlled by Democrats and 36 by Republ...