Albanese will attend the annual NATO summit for the second year running as part of the so-called “IP4”: a group of four non-member states in the Indo-Pacific comprising Australia, South Korea, Japan and New Zealand.

Source: https://www.smh.com.au/politics/federal/paul-keating-brands-nato-boss-a-supreme-fool-for-deepening-asia-ties-20230709-p5dmwn.html?ref=rss&utm_medium=rss&utm_source=rss_feed

The association filed a lawsuit in 2022 to stop Hilderman from using the word “engineer” as a non-member, claiming it created the “erroneous impression” that he was authorized to practise as a professional engineer.

Source: https://energeticcity.ca/2023/12/16/peoples-party-candidate-must-stop-using-engineer-b-c-supreme-court-rules/

The Constitution might not explicitly require the speaker to be a member of Congress, but some scholars think the framers of the Constitution probably didn't expect the House of Representatives to even contemplate choosing a non-member as its leader.

Source: https://www.forbes.com/sites/nicholasreimann/2023/01/05/trump-gets-one-vote-for-house-speaker-in-apparent-hard-right-stunt-and-hes-technically-eligible-for-the-job/