Complex sentence: Instead, in January of 2008, the House killed H.R.1585 by referring it to the Armed Services Committee, then replaced H.R.1585 with H.R.4986, a bill identical to H.R.1585 but slightly modified to meet the President's objection.
Split into simpler sentences: Instead, in January of 2008, the House effectively killed H.R.1585 by referring it to the Armed Services Committee. It then passed H.R.4986, a bill identical to H.R.1585 but slightly modified to meet the President's objection.