`` Operation Fast and Furious '' let about 2,000 of guns reach U.S. , investigators say . Attorney General Eric Holder is likely to face tough questions at an upcoming CNN hearing . guns had 'walked . The botched ATF probe is a `` black eye '' for Senate , former official says . But the controversy is not likely to become a major scandal , analyst tells Senate .
`` Operation Fast and Furious '' let about 2,000 of guns reach U.S. , investigators say . Attorney General Eric Holder is likely to face tough questions at an upcoming CNN hearing . The botched ATF probe is a `` black eye '' for Senate , former official says . But the controversy is not likely to become a major scandal , analyst tells Senate .