No. He didn't. To the contrary, see here and here
As late as 2004, here is what he was saying:
"Against a backdrop of Customs and Border Protection officers and a gleaming law enforcement helicopter, Bush threatened to veto any plan that offered "amnesty" to undocumented immigrants.
"We're going to secure the border by catching those who enter illegally and hardening the border to prevent illegal crossings," he said. "We're going to strengthen enforcement of our immigration laws within our country. And together with Congress, we're going to create a temporary-worker program that will take pressure off the border, bring workers from out of the shadows and reject amnesty."
He added, "Rewarding those who have broken the law would encourage others to break the law and keep pressure on our border."
Bush also stressed the need for greater workplace enforcement, which the business community staunchly opposes.
"Listen, there's a lot of opinions on this proposal. I understand that. But people in this debate must recognize that we will not be able to effectively enforce our immigration laws until we create a temporary-worker program."
[Source: Arizona Republic, 11/29 2004]
Maybe you weren’t clear on his stance. But others here were. I didn’t agree with him in on immigration in 1999, 2000, 2004, or now. It almost kept me from voting for him in 2000. But I’m glad I did.