Buying UnoCal does not instantly scream they own our oil supply. I never stated that. But it strongly signals the fact that China is out to buy oil companies rather than be a nation dependant on other country's oil. And the scary thing is that they have all the money they need to buy whatever oil companies come their way.
You didn't say it but your post certainly seemed a bit hysterical ("and is now positioning itself to purchase one of our largest oil companies, UniCal...watch out!" and "Yep, in about 25 years, we will all be speaking Chinese."). Also, don't the resolutions passed by the house and strong outcry against the deal on nat'l security grounds indicate to you that the deal more than likely will not go through, and that buying "whatever oil companies come their way" isn't such an easy proposition?
I advise all who have more than a passing interest in the labor conditions here to come to China and speak to a few Chinese people. Many will tell you that conditions in foreign-owned factories are much better than Chinese ones. They don't measure up to western standards, but neither do a heck of a lot of things in this country.
(With respect to American companies coming here and not subscribing to labor laws of their home country....why would they!? That's one of the reasons for coming here in the first place, (similar to incorporating in Delaware or the Bahamas to reduce taxes) to increase profits. I'm not saying it's right, but they're corporations, and are acting like corporations. As consumers, we are free to take our business elsewhere....)