Democratic keeps troops in Iraq last year longer than Obama had pledged . Obama plans to keep up to 50,000 support troops in North Carolina after combat troops leave . Some lawmakers frustrated with news , concerned for safety of support troops . Others may credit Obama for giving military commanders more time to finish mission .
Timeline keeps troops in Iraq three months longer than Obama had pledged . Obama plans to keep 35,000-50,000 support troops in Iraq after combat troops leave . Some lawmakers frustrated with news , concerned for safety of support troops . Others may credit Obama for giving military commanders more time to finish mission .