Labour leadership candidate Emily Thornberry says British tax payers should fund the Duke and Duchess of Sussex's security if they move to Canada.
"He has done great service," she said.
"I just hate to think what he must be thinking now, having used his instinct to try and defend our country, now he has his much-loved wife and his baby under the type of media scrutiny they are suffering.
"He must be really wanting to defend them."
The comments sparked an angry response on Twitter.
One user said: "We have veterans sleeping on the streets & we can't provide a roof/food/mental health care yet we have to provide security for Harry & Megan when they CHOOSE to leave our country/Royal family......I don't think so!!!"