We should welcome any such policy. Frankly, mexicans are hardworking and willing to take up jobs which nobody is willing to take up.( Will all those intellectual computer guys willing to mow the lawn?.). But most of the employment based people are working on jobs for which there are plenty of americans looking and out fo jobs.
So I think this is a visionary president with some great visionary policies. Just look at Iraq, he Got saddam and Osama is next. He has really proved to the world that US is the best in every respect and all other nations and its subject are lesser mortals.