Why not? A constitution is the statement of intent for how you want your country to be (minimums anyway). If you can't even apply those minimums to foreigners

Why not? A constitution is the statement of intent for how you want your country to be (minimums anyway). If you can't even apply those minimums to foreigners what does that say about your country? Your respect for your own rule of law? Would you question if murder laws applied to non citizens?