I am not familiar with the specifics of US lawmakers. Maybe Senators etc govern but MP's do not.
"I am not familiar with the specifics of US lawmakers. Maybe Senators etc govern but MP's do not."
In even a Parliamentary system, the MPs would be considered "part of the government" in that they have a legislative function and create the "government" by appointing a PM from the majority party in the House of Commons - to be rubber-stamped by the Crown.
Your limiting of the word "government" to encompass only the chief executive is way too narrow.