Possible Clues:

• Lake Mead structure
• Monumental barrage put up by Mother with vacuum cleaner in front
• Construction on the Colorado River
• Colorado River barrier in Nevada, constructed in the 1930s
• Brick carrier's about finished on American hydroelectric construction
• Be undecided about old nuts used up in feat of US engineering
• Barrier on Colorado river
• Do housework, mother - it has great potential power behind it in America
• Does it hold water, appearing to suck up to mother?
• President's mother, a controller of Colorado