There will be more passes over the USA this month
See here:
http://science.nasa.gov/headlines/y2009/03jul_sightings.htm
To quote:
"The marathon of space station flybys won't stop until mid-to-late July (depending on your location). That gives space shuttle Endeavour, currently scheduled to launch on July 11th, time to reach the space station and join the show. As the shuttle approaches station for docking, many observers will witness a memorable double flyby—Endeavour and the ISS sailing side by side across the starry night sky."
So before the end of this month, the ISS will be even bigger and brighter.