Why do you suppose that some countries refuse to take back their own citizens in regards to deportation?

I would think they would welcome them back with open arms. Shouldn't they be glad to get them back?
And if their native country doesn't want them, why would any other country want them? And I know that it's not about voting, because it's illegal for illegals to vote. Right?
Why do you suppose that some countries refuse to take back their own citizens in regards to deportation?
Why do you suppose that some countries refuse to take back their own citizens in regards to deportation?
Why do you suppose that some countries refuse to take back their own citizens in regards to deportation?
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