The word Judeo-Christian is often used to refer to exactly that kind of secularized Christian morality which undergirds the post-Enlightenment west. It became popular as a means to combat anti-Semitism in America, by arguing that Jews and Christians (and nobody else) shared some kind of common moral framework which so happens to be what the United States was built on.
The problem is, if you asked Jews 200 years prior about "Judeo-Christian values" they would have laughed you out of the ghetto. It's solely the product of an assimilating Jewish population trying to make a claim to American identity, like Italian Americans and Columbus Day. It's also totally entangled in debates about Zionism, as Judeo-Christian comes to mean "Abrahamic but not Muslim." Actually, you hear Abrahamic get used more often as Muslims in America stake a similar claim to America.
The problem is, if you asked Jews 200 years prior about "Judeo-Christian values" they would have laughed you out of the ghetto. It's solely the product of an assimilating Jewish population trying to make a claim to American identity, like Italian Americans and Columbus Day. It's also totally entangled in debates about Zionism, as Judeo-Christian comes to mean "Abrahamic but not Muslim." Actually, you hear Abrahamic get used more often as Muslims in America stake a similar claim to America.