Was that the industry that was cranking out more weapons at the end of the war then the beginning?
You mean like the Russian industry which produced more at the end of the war? Yeah, imagine that, the US was producing even more weapons at the end of the war than the beginning. Go figure!
The Germans invaded the USSR in 1941. Already in 1941, the US was ahead of Russian production in military aircraft and the advantage became even more lopsided as the war progressed:
http://www.nationalww2museum.org/le...ry/ww2-by-the-numbers/wartime-production.html
In 1942, the year the US actually first saw combat in the war, the aircraft production advantage was almost 2:1.
The US produced 6,000 more tanks over the course of the war than the USSR:
http://www.nationalww2museum.org/le...ry/ww2-by-the-numbers/wartime-production.html
The US supplied aircraft, tanks, locomotives, clothing, ammo, weapons, jeeps, and many other things to the Russians in the initial stages of the war and kept the Russians afloat (along with the Russian winter). Here are some other numbers (not broken down by year, unfortunately, and I don't have time this morning to search more):
EDIT: Tables didn't come through formatted correctly, so you can see them
here.
Aircraft:
Power Total Fighters Attack Bombers Recon Transport Training Other British Empire
[7] 174,831 38,604 33,811 36,380 7,014 12,577 46,156 289 France
[8] 4,016 1,597
[9] 280 712 USA and Ter 324,000 99,000 97,000 23,000 57,000 USSR 136,223 63,087 37,549 21,116 17,332 4,061 Germany and Ter 119,307 53,215 12,539
18,449[10][11] 3,079 11,546 Hungary 1,046 Italian Empire 8,810 4,510 2,063 468 1,769 Japanese Empire 68,999 36,571 15,117 2,110 15,201 Romania 1,000 346
Tanks/SPGs/vehicles/weapons:
Power Tanks and SPGs Armoured vehicles Soft-skinned vehicles Artillery Mortars Machine guns British Empire 47,862 47,420 1,475,521 226,113 239,540 1,090,410 USA and Ter 102,410 2,382,311 257,390 105,055 2,679,840 USSR 106,025 197,100 516,648 200,300 1,477,400 Germany and Ter 67,429 345,914 159,147 73,484 674,280 Hungary 908 447 4,583 Italian Empire 3,368 83,000 7,200 22,000 Japanese Empire 3,724 165,945 13,350 29,000 380,000 Romania
The massive Russian advantage is in artillery and mortars whereas the US has a more massive lead in vehicles and machine guns. The Russians had a slight advantage in tanks/SPGs produced and I'd wager that their advantage in tank production came in the later years of the war. If we assume the numbers above are correct and reconcile with the numbers posted
here, we see that the Russians' chief advantage was in SPGs since the US produced more tanks during the war.
(And yes, the Russians had better tanks especially towards the end of the war. THis isn't some great secret. The Shermans were more feared by her crews than the enemy.

)
Naval Forces (not entirely relevant in the case of the USSR but it shows the massive capability of the US):
Power Carriers Battleships Cruisers Destroyers Frigates Corvettes Sloops Patrol Boats Submarines De/Mining Landing Craft British Empire 36(24) 6 102 291 209 387 33 4,209 230 1,244 9,538 USA and Ter 163(141) 8 48 349 203 35,000 USSR 2 2 25 52 Germany and Ter 17 1,141 Italian Empire 3 6 6 28 Japanese Empire 16 2 9 63 167 Romania
Source
The bombing campaign was one of the largest wastes of lives and material in the war.
The bombing campaign destroyed Germany's industry and access to oil in Romania. Without that bombing campaign, the war lasts longer. For example, the ME262 likely reaches service in large quantities and changes the nature of the air war.
If the Russians had wanted to keep going after Germany, the US army would have provided a difficult speedbump as the Russians moved onto France. The size of the Red Army was staggering at the end of the war, they had better tanks, they had comparable planes and more importantly, they had the ability to get material to the front.
No disputing the role of the USSR in the war, but to pretend that the US played a minor role is absurd. You're also overlooking US supplies which kept Britain in the war which, had they been knocked out, the Russians would've been in deep, deep trouble.