""More than 600,000 illegal immigrants were apprehended through the Arizona Border Control Initiative last year"
"It is my understanding that those apprehended were released with a summons to appear in court. Is this correct?"
If they are OTM (other than Mexicans) probably, but most mexicans are actually shipped back to Mexico (where alas, there is little stopping them from just trying again).
Bush administration is also trying to end the 'catch and release' process.
So saying that a certain number were apprehended is misleading, if not a downright lie, because a large number were released into the U.S.
Which is another reason I don't believe a word of it.