Yes, it is faster to do adjustment of status in the US than go through consular processing; however, if he is not already in the US, he cannot enter the US with the intent of adjusting status right away. If he enters as a visitor, you have to wait at least 90 days before you start the process so that it does not look like misrepresentation of intent at the time of entry.
Answered on Nov 11th, 2014 at 5:35 PM