Laughs. I must be way off compared to other answers here. Traditional values...having morals and principles, integrity, respect for the family unit and each other, being honest, hardworking, a person of faith, doing your best to be a productive member of society, and a good person, etc.

Context is key here...

But lately normally it means they're being political and trying to say "our way" or "their way"... whole trying to be vague in explaining what the ways are and trying to rally people in one direction or the other.

But generally speaking, family coming first, and/or Christian heterosexual relationships.

The traditional values of the U.S. have included misogyny, racism, religious fanaticism, homophobia and oppression, so I tend to be suspicious. And I’ve observed that they rarely include inclusion or acceptance of perceived "differences".

Often associated with strict discipline

Helping the rich get richer.

It could be a few things: bigotry, misogyny, child abuse, or a combination.

Oppression of women and non-white people

That they are more conservative and believe in God.