"美国众议院议员" can be translated into English as "Member of the U.S. House of Representatives" or simply "U.S. Representative" (when the context is clear).
"Member of the U.S. House of Representatives" is a more formal and complete expression, directly referring to the role within the specific legislative body.
"U.S. Representative" is a concise and commonly used term in everyday conversation or media reports to describe someone who serves in the U.S. House of Representatives.