How to tell legal from illegal immigrants

Apparently, one of the Powerline guys can do it just by sight, referring to the massive marches against what Republicans call immigration reform as the "March of the illegals," a statement revolting in it's assumption and smacking of xenophobia.

The post at Powerline suggests that these marches will "increase support for enforcing existing immigration law." While I think it would be hard to find someone staunchly against enforcing laws, the post is a bit of a diversion from what's really the issue.

These protests aren't intended to change people's minds about enforcing current law, but rather an expression of anger against the harsher immigration reform that the Republican led House has already passed and reforms that await debate in the Senate that has raised their anger and turned them out into the streets.