The punchline, http://www.copyright.gov/title17/92chap5.html#501, is you can't do any of these things, http://www.copyright.gov/title17/92chap1.html#106, or you're in trouble. Mere possession is not listed, the author is not granted an exclusive license to own a copy.
Then there's http://www.copyright.gov/title17/92chap6.html#602 in the event you're downloading internationally. I'm not sure downloading counts as importing, but even so it specifically excludes people importing a single copy for private use.
The punchline, http://www.copyright.gov/title17/92chap5.html#501, is you can't do any of these things, http://www.copyright.gov/title17/92chap1.html#106, or you're in trouble. Mere possession is not listed, the author is not granted an exclusive license to own a copy.
Then there's http://www.copyright.gov/title17/92chap6.html#602 in the event you're downloading internationally. I'm not sure downloading counts as importing, but even so it specifically excludes people importing a single copy for private use.