Does the United States always live up to its own principles of democracy?

Yes

Explanation:

Supporting democracy not only promotes such fundamental American values as religious freedom and worker rights, but also helps create a more secure, stable, and prosperous global arena in which the United States can advance its national interests.

it's a secular holiday. it is and was a custom developed to recognize the ending of a time and a wish for a good future. the kind of kiss you exchange, if you are single, is intended to predict what kind of year you will have in the coming year.

it is saying good bye to the last year with all its ups and downs, and hello to the new year, with all its hopes and dreams.