Complex sentence: Al Taqwa Bank was targeted early on by the United States because of its alleged links to terrorism and because its allegedly terror-related funds indirectly filter through the banking system of the United States itself through its use of correspondent accounts.
Split into simpler sentences: Al Taqwa Bank was targeted early on by the United States because of its alleged links to terrorism. The U.S. also targeted it because its allegedly terror-related funds indirectly filter through the banking system of the United States, through its use of correspondent accounts.