"We absolutely agree with the need to find out why Fast and Furious happened ..."
Then why stonewall Congress for more than a year?
"... and why it was employed in the previous administration."
Operation Fast and Furious was started in 2009, after Bush left office. There was a separate operation called Wide Receiver during the Bush administration, but unlike Fast and Furious the purpose of Wide Receiver was never to let guns walk or to break US law.