请帮忙.刚收到CANADA的体检通知,同时要求补文件,其一是

原文如下: Current statement of funds already in Canada or available to be transferred to Canada, i.e. letter(s) from your financial institution(bank) confirming the type(s) and current balance(s) of the account(s) you hold. Include bank statements fron Canadian banks if applicable.
这是要什么文件呢?是否我一定要在CANADA的银行有帐户和存款,在美国银行的行吗?其实我们在申请时已提供了在美国的银行存款证明.
多谢热心人回贴.