By Kayla Tarnowski, David Morgan and Chris Helgren WINDSOR, Ontario/WASHINGTON/OTTAWA (Reuters) -North America’s busiest trade link reopened for traffic late Sunday evening, ending a six-day blockade, Canada Border Services Agency said, after Canadian police cleared the protesters fighting to end COVID-19 restrictions. Canadian police made several arrests on Sunday and cleared protesters and vehicles that occupied the Ambassador Bridge in Windsor, Ontario, after a court order on Friday. The blockade https://www.reuters.com/world/americas/truckers-ambassador-bridge-perfect-spot-threaten-us-cana…