My husband applied for Renunciation Of PR status due to non-eligibility of resident requirements. He applied for this in the Philippines, 3 weeks or so ago, No reply yet.
Can he proceed to apply for tourist visa despite having done this
He should apply for the visitor visa only after his request is granted. As per CIC instructions:
We recommend that you apply for Voluntary Renunciation of your PR status first, and apply for your TRV once you receive the approval of your Voluntary Renunciation.
