Complex sentence: Accordingly, Taney issued a writ of attachment for Cadwalader, ordering a U.S. Marshal to seize Cadwalader and bring him before the court the following day, but the executive branch declined to execute Taney's writ, and the marshal was refused entry into the fort.
Split into simpler sentences: Accordingly, Taney issued a writ of attachment for Cadwalader, ordering a U.S. Marshal to seize Cadwalader and bring him before the court the following day. On that same day, the executive branch declined to execute Taney's writ of attachment, and the marshal was refused entry into the fort.