In a Canadian company, there is a US bank and cheques are being printed in US dollars. Need to specify on the cheque that the funds are US.
Go to Cash Management / Open Setup / Checking Accounts. Select the account where the cheques are being printed from and click on Edit. Go to the Check Printing tab and look for the MICR (Magnetic Ink Character Recognition) section at the bottom of the page. Under Regional Settings - Canada, put a check mark in the box for US Funds.