WINDSOR, Ontario — The Ambassador Bridge is set to reopen, bringing Canada’s “national economic crisis” to an end, Windsor Mayor Drew Dilkens said Sunday. “Border crossings will reopen when it is safe to do so and I defer to police and border agencies to make that determination,” Dilkens tweeted about 11 a.m. Sunday. On Sunday, police at the demonstration site near the Ambassador Bridge engaged protesters for continued enforcement and multiple arrests were made, Windsor Police Service said. “The arrested persons are all facing a charge of mischief. Multiple vehicles within the demonstration ar…