It seems like there may be a typo in your question. I assume you meant "anti-Semitic" instead of "anti-semantic." Please clarify if my assumption is incorrect.
If you are asking about the prevalence of anti-Semitism in the United States after World War II, it's essential to note that anti-Semitism existed before and after WWII, but its manifestations and public perceptions evolved over time.
During World War II, the Holocaust brought widespread attention to the horrors of the Nazi regime's systematic genocide of Jews, leading to a shift in public opinion in many parts of the world, including the United States, as the full extent of the atrocities became known.
In the years following World War II, many people and governments, including the United States, expressed support for Jewish communities, and there was a broader recognition of the need to combat anti-Semitism.
However, it's essential to acknowledge that anti-Semitism has not been entirely eradicated, and incidents of anti-Semitic rhetoric, discrimination, and violence have still occurred in the United States and other parts of the world in the post-WWII period. Efforts to combat anti-Semitism and promote tolerance and understanding remain ongoing
I hope this helped!
~~~Harsha~~~.