The Executive Branch has veto power in Congress. This means that they can cancel out a law. However, Congress can override that veto with a 2/3 vote, almost impossible bc of the parties and everything. It can also pass executive orders, which bypass congress and create a law for a temporary time. Lastly, they have the ability to send in military for I think 48 hours until they need Congress to approve it.
123´E is a longitude line. The longitude is a measure that in cartography expresses the angular distance between a given point of the terrestrial surface and the meridian that is taken as 0° (that is the meridian of base) which imaginatively divides the earth between East (E) and West (W).