If you're asking about semi-recent happenings, I do believe that GMC has linked 600,000k+ fatal crashes to faulty cars.
In the past, Chevy had an engine mount issue that led to many crashes and fatal accidents, but kept quite for years before speaking up. (1969-ish)
He believes each of the three branches of the government are balanced and there is no danger of one person or group of people taking all the power for themselves. the phrase "a constitutional door is left open" refers to the process of amending the constitution.
Answer:
A metropolis is one city with a population of half a million or more residents that sits at the core of an “agglomeration” of smaller urban entities that merge into a continuous built up area. A mega city is a very large city, typically one with a population of over ten million people. Some differences can be a mega city holds more people than a metropolis, and is a very large city, not just made up of different small urban areas. Some similarities is they're both meant for large groups of people.
Wasn't James Madison a president? If so then maybe he had to many crowded places to work?