The Pope subscribes to a consistent life ethic. So he is pro life on abortion because he sees the taking of an unborn life as a human rights issue. But he doesn't limit his pro life ethics to abortion. He sees poverty, war, capital punishment, injustice against migrants and refugees, as well as Climate Change as pro life issues. 

For him pro life =pro social justice and pro human dignity. People may not agree with him on everything, but he certainly has moral consistency. And he is absolutely right on DACA. Mass deportations(which happened under Obama as well, lets not forget) is immoral and not pro life. And it's certainly not pro family when you are ripping families apart.