It depends on what amnesty means.
In practice, almost no presidential hopeful wants the extreme that anyone who slipped into the US should be ejected and never allowed back. Given that, then the question remaining is what kind of a slap on the wrist should they get before being allowed back.
Slick politicians have their own personal definitions of it. Purposefully unspoken to trick conservatives.
Anyone who “slips into the country” has committed a serious felony and should never be allowed back in — even for a day. THAT is what I want to hear a “presidential hopeful” say. Otherwise, he/she is just supporting some level of amnesty.