Having damned legislation in the Senate for two sessions past, the Swing-Johnson bill to build the world's hugest dam in Black Canyon on the Colorado River, was last week passed by the Senate, 64 to 11. Passed by the House last spring, the measure now went to conference to have House-Senate differences composed.
One difference, easily composed, is between the $125.000,000 authorized by the House and the Senate's figure of $165,000,000.
Another difference was the distribution of water. The Colorado drains seven States Wyoming, Colorado, New Mexico, Utah, Nevada, Arizona, California. The first four, the Upper Tier, have long been agreed on their...