Basically, he was staunchly anti-Communist throughout the 1920s and critiqued the parliamentary system of Weimar Germany very harshly. He advocated invoking the famous 48th article of the Weimar Constitution - a provision allowing the President to declare himself a dictator in order to deal with a domestic crisis (specifically, in Schmitt's fears, a Communist coup d'etat).
When Hitler seized power, he basically ignored (as so many others did) his anti-Semitic rhetoric and hoped that he would avert the horror of a Bolshevik takeover of Germany.
When Hitler made good on his anti-Semitic rhetoric and enacted the Nuremberg laws, Schmitt basically exited public life. He was automatically suspect because his wife was a non-German Slav and a foreigner and his little daughter was of mixed blood. He decided at that point not to draw any attention to himself and went into semi-retirement.
it should be noted that his favorite student, Leo Strauss, was Jewish and Schmitt pulled strings to get him an academic scholarship in America and the visa that enabled him to escape the Nazi regime. Strauss always defended Schmitt for this reason and said that he was not an anti-Semite.
After the war, Schmitt claimed that he was always secretly opposed to Nazism and that's why he was not active in public life after 1935. In reality, he was probably fearful for his wife and daughter and too cowardly to risk losing his academic career.
I've read many of his articles from the 1920s and I don't recall any that discuss Jews or Judaism in any detail.
You may find this link to be of interest. I do not like the tone of this "doctoral thesis" a single bit, but you may be able to judge better whether it has any redeming qualities. I would be curious to see the bibliography.
[Schmitt] was staunchly anti-Communist throughout the 1920s and critiqued the parliamentary system of Weimar Germany very harshly.
This jibes with what I've read about Schmitt. I agree with TopQuark that "cowardly" may be too harsh a word for Schmitt.
He advocated invoking the famous 48th article of the Weimar Constitution - a provision allowing the President to declare himself a dictator in order to deal with a domestic crisis (specifically, in Schmitt's fears, a Communist coup d'etat).
Irony of ironies - today Arnulf Baring bemoans that Germany no longer has Article 48!
BTW, here in Frankfurt, where I live, Adorno and his academic collaborator Horkheimer are "Säulenheilige", i.e., revered as cerebral giants by those who fashion themselves "intellectuals". The "dialectical method", which Adorno championed, is a sterile, witless exercise in hair-splitting and not-so-crypto-Marxian exegesis. But immensely popular among the chattering classes.
I was saved from falling into this trap by reading at age 17 the clueless, condescending, anti-sensual putdown by Adorno of jazz music. But I wasn't a conservative yet then, which meant that for many years afterward I remained conflicted, confused and lonely.