The only people he suggested offering a so-called "path to citizenship" to were young people who were brought here by their parents. These could obtain citizenship through military service, the same as young people elsewhere around the world. He makes his position quite clear to anybody who bothers to read the article:
“I am not for amnesty for anyone. I am not for a path to citizenship for anybody who got here illegally,” Gingrich said at a town hall event in Naples, Florida according to media reports.
“But I am for a path to legality for those people whose ties run so deeply in America that it would truly be a tragedy to try and rip their family apart,"
I haven’t heard Gingrich make any distinction between amnesty and legality, but a good working model might be: amnesty is waiving punishment, whether before or after due process of law (trial), and legality can mean one’s status AFTER having faced the music, paid a penalty and then normalized one’s status by registering in a temporary worker program, if eligible.
Just a thought, since everyone seems intent on conflating the two terms.