Measures include strategies on employment, legalization, policing. By Eunice MoscosoWASHINGTON BUREAUSaturday, March 08, 2008 WASHINGTON — Lawmakers on both sides of the aisle are pushing bills that crack down on illegal immigration, keeping the issue alive in Congress during a volatile election year.In the House, conservative Democrats are asking their party leaders to support an enforcement bill sponsored by freshman Rep. Heath Shuler, D-N.C.The legislation, dubbed the Secure America with Verification and Enforcement Act, would increase the Border Patrol by 8,000 people; train more state and local police officers to enforce immigration law; and require that within four years, all...