Agence France-Presse: US lawmakers face a slew of key debates before the August recess, urged by President Barack Obama to back his ambitious agenda with bills on healthcare reform and global warming, and the confirmation of a new Supreme Court judge. The US Congress was back in session Monday after a week’s recess with a packed program in the coming weeks before the month-long summer vacation starts on August 3. The Obama administration is counting on the House of Representatives to push through …