You're both a bit off. Yes, Death Valley is partially in Nevada, but over 90% of it lies in California.
It's no so much past the Sierra Nevada range, and more as the national park service notes, between the less known Amargosa and Panamint ranges.
If you doubt the feasibility of such an engineering project, take a look at how Los Angeles gets its water supply.
Las Vegas is a good 70 miles away from Death Valley...
Finally, regarding your sensationalist comments about how big such a project would, and how long the canal would be...
1.) The longest Canal in the world is the Grand Canal in China. The canal was completed in AD 609 and is over 1,000 miles long. As the crow flies, Death Valley is somewhere around 200 miles from the ocean.
2.) The US interstate system, the trans-siberian railway and the channel tunnel all required different amounts of men and machinery to complete, so it's curious that one project could simultaneously require 10 times the amount of each of them. if A > B > C, then 10 * C < 10 * A.
3.) As of 2004, the US Interstate system is 46,837 miles long.
Honestly, I'm not saying it's a great idea or even a viable one, but YOU ARE saying that it's NOT viable, on the basis of absurd claims that are not based on anything remotely resembling fact (read a map?), on sheer supposition, and on nothing short of complete sensationalst BS.
If you're going to tell someone their idea is crap, at least put the time in to make sure you're don't look like a complete idiot yourself.