(AP) — Canadian lawmakers have voted to serve a summons on Facebook executives Mark Zuckerberg and Sheryl Sandberg that would compel them to appear before them the next time either visits Canada.

The decision comes after Zuckerberg and Sandberg failed to appear before the international grand committee on big data, privacy and democracy, which is being hosted by Canada’s parliament this week, despite being called on to testify. The panel of international politicians is examining the role of tech giants in safeguarding privacy and democratic rights.

New Democrat lawmaker Charlie Angus said Tuesday the Facebook executives were showing disrespect to legislators around the world.

Conservative lawmaker Bob Zimmer called it “abhorrent.”

Zimmer said if they refuse to appear they will be held in contempt. It was unclear what consequences that might have.