The majority of Jewish communities around the world today still honor the matrilineal descent outlined by the Sages in the Talmud, in addition to accepting converts. However, as intermarriage between Jews and non-Jews has grown, especially in North America and Europe throughout the 20th and 21st centuries, a debate has persisted as to how to classify children of Jewish fathers and non-Jewish mothers. This may particularly come up as the offspring are often seen as Jewish by outsiders, and may themselves want to be connected to Judaism and their heritage.
The Reform movement in the United States, the largest Jewish denomination in the country, has therefore made a ruling adjusting the age-old standard: It considers a child with one Jewish parent of any gender as Jewish, as long as they are raised with a Jewish identity and some degree of Jewish practice.
The Conservative movement, meanwhile, while not formally condoning patrilineal descent or intermarriage, routinely includes families with non-Jewish mothers in its communities by having the children formally converted to Judaism. More traditional and Orthodox congregations, and most Jewish communities outside the US, remain strictly opposed to intermarriage or to changing the rules on Jewish status following the mother, though patrilineal Jews have the option to undergo a conversion in adulthood.