Utilize the input text as a context reference, choose the right relationship between Susan Collins and United States Senator from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

“Kaplan University is honored to welcome United States Senator Susan Collins to our campus in Augusta,” said Matthew Cote, Executive Director, Kaplan University Augusta campus.

Answer: position_held