Plus this is the sort of nonsense that your government is supposed to do something about
Nah, it's more like what people imagine the government cares about. Lots of people are still scammed through letters and phone calls, and there are thousands of homes broken into every day. Meanwhile most police investigators are busy smoking weed with drug dealers, and the NSA is occupied with tracking the cellphone of a goat herder in Pakistan whose cousin's brother began growing his beard 4cm longer.
Why is there no similar push in any other field (think firefighter/truckdriver/constrution)
I think it is across the board (of course only when male numbers are "too high"). Female-owned construction companies are preferred for government contracts, and the NYC fire department just eliminated physical performance tests since not enough women could pass. It's probably happening now because the tipping point of unmarried female voters has been reached, from now on they are simply going to vote themselves entitlements. The writers of the Constitution weren't just being jerks when they didn't give women suffrage
"You don't go out and kick a mad dog. If you have a mad dog with rabies, you take a gun and shoot him." -- Pat Robertson, TV Evangelist, about Muammar Kadhafy