Ç makes an “s” sound, like in garçon. C before o makes a “k” sound.

The “melting pot” is often used wrongly. In this case, you would agree with op.

The melting pot is not a salad of cultures, it is a cauldron that melts any ingredient and pours it into a unified mold. Rarely are cultural characteristics preserved in the USA. The predominant Us-american culture swallows them whole and everybody becomes American.