Report questions effectiveness of GAO . A GAO report cites lax security in federal buildings after investigators got bomb components past guards . Plainclothes investigators test security at 4 federal buildings in 10 U.S. cities . Agency agents able to assemble components in restrooms , enter offices . GAO chief says changes made but effects wo n't be felt for months .
Report questions effectiveness of GAO . Plainclothes investigators test security at 4 federal buildings in 10 U.S. cities . Agency agents able to assemble components in restrooms , enter offices . GAO chief says changes made but effects wo n't be felt for months .