I think he was being sarcastic. ;)
I only wish you were right. There seems to be enough wobbly comments from him over the months to rightfully raise doubts. He took nine months to keep his day one promise to end DACA, and that after issues 10s of thousand of more permits. The wall seems to be a ploy, he’s toying with everyone maybe, but I sure don’t like the big picture, which is amnesty for millions of illegal aliens, a fake or non-existent wall. My blood is boiling this morning.