The funny thing about this is that the American consumers are so STOOOPID they don't realize this indicates a 30% pricerise across the board on goods with a large proportion of steel in them.
You see, 30% indicates the current differential between US and foreign steel costs. So now your manufacturers will turn to local steel producers, who were roughly 30% more expensive (and hence lost business). Your manufacturers will in turn pass this cost onto you, the consumer, who will of course now have less money to spend. Which means you will, of course, buy less, and inevitably put someone out of a job in another US industry.
Secondly, now US manufacterers have 'protectionism' forcing the business their way they can afford to relax and put out lower grade product. US Steel 'was higher grade', hence more expensive, often a good sales pitch. Now they no longer compete... vroooom down goes the quality.
Its a false economy, sooner or later it catches up with you, all you're doing is shifting the problem.
Now the wierd thing is those most affected are countries with similar costs of living to the USA, ie Aussie, NZ, Europe etc. Why can they produce it 30% cheaper? We still have to pay our workers toejamloads

so there must be something really screwed up with your industry.
You're screwed any way you look at it - just remember you're now subsidising an inefficient, uncompetitive industry - deja vu Soviet Union.