How do members of Congress act as representatives of particular groups of constituents when they do the actions detailed in Exercises Constitutional Powers

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

new evidence is discovered.

oversights and errors are corrected,

new technology is applied to evidence.

that would be the steamboat because none of the other things are forms of transportation