Are Anti-Semitism and Anti-Americanism Connected?

The Algemeiner wrote on May 20: “… it’s often the case that where you find anti-Semitism, you will also find an associated anti-Americanism.” Why is this so, and how do both forms of prejudice manifest themselves? The article uses Britain’s hard-left Labor Party leader Jeremy Corbyn as a prime example. In addition, there is a third form of prejudice which is closely connected with anti-Americanism and anti-Semitism. Which is it, and why is there such a connection?