The cartoon is addressing two different issues. The first is being that congress is sinking fast. The cartoon shows that half of the captial is under water already. It shows someone saying "mission accomplished" because it is showing after everything that has been done in congress that it being sunk was done on purpose due to the decisions that have been made. The second issue that the cartoon is poking fun of is the recent cruise ship that sank and no one really knew what to do when it was sinking. This cartoon is pointing out that congress does not really know what they are doing which is causing it to sink.