Democrats are calling for public hearings and testimony from certain individuals, including Hegseth and Rubio, regarding the situation with Iran. The demand for testimony and hearings appears to be related to concerns about a potential war with Iran, with some outlets mentioning questions about the timeline and possible funding requests. The exact nature and scope of the desired testimony and hearings are not entirely clear, but it seems to be part of a broader effort by Democrats to scrutinize decisions and planning related to Iran.