There are many combinations many people believe are contradictions (like pro life and pro death penalty, pro life and [insert really practically any position the right has on a non abortion issue whether it's guns, vaccine mandates, mask mandates, immigration, Medicare for all, free college (more educated people tend to live longer), you name it]), or , "Education not indoctrination (but we will teach PragerU in public schools)", "Actual Nazis shouldn't get fired from their job for being Nazis but if you support Palestine, then the government can legally fire you over it", "Being anti Israel is anti sematic, but being pro Hitler isn't" (Cadence Owens liked a post I think everyone can agree is anti sematic and the right likes her, but if she endorsed Palestine, then she's an unforgivable anti semite). I'm pretty sure we can agree that liking a post that stereotypes Jews as drinking Christain blood is way more anti sematic than not wanting the Israeli military to attack Gaza.
But here is why it is a contradiction to be anti death penalty and pro deportation.
If you are pro deportation, then you don't want undocumented immigrants getting free healthcare and having their living expenses paid for by the state.
If you are anti death penalty, then you do want murderers or similar getting free healthcare and having their living expenses paid for by the state.
It is a contradiction to treat undocumented immigrants worse than murderers. Murderers are worse.
They are ILLEGAL immigrants
The term, "Illegal immigrant" is synonymous with, "Undocumented immigrant" and the only difference is connotation. Those who see no problem with them being here will refer to them as undocumented. Those who do see a problem with them being here refer to them as being illegal. Use whatever term you prefer. I don't think it's wrong that they are here; so I use undocumented. I won't police your speech; you don't police mine.
I happen to believe the high slope punishment policy; the very bad crimes (murder; r***) should get death as punishment; the harmless crimes should get no punishment.