Well, besides the fact that free trade, like economic activity in general, is an unalienable right - the pursuit of happiness. From the Economist (and edited for length):
Barack Obama led off with a call for a reshoring of manufacturing jobs seemingly calculated to cost him The Economist's endorsement. Mr Obama's take on the global economy is strikingly bleak and depressing.
At no point did he attempt to justify the unstated assumption that what America ought really to do is develop an economy like China's. Perhaps more distressing, he implied in several places that the reason to become more like China was that only by doing so could America defeat China, and others, at economics. Consider the line:
Our workers are the most productive on Earth, and if the playing field is level, I promise you – America will always win.
Leaving others, one is forced to conclude, to lose—not once, not occasionally, but always. And what is likely to be the outcome of unending defeat? Destitution? Are we to hope that other countries are left with no gainful employment opportunities at all? If that means dreadful poverty, then Mr Obama ought to be dragged before an international tribunal.
But maybe it's not so bad, in which case we have to wonder why it's so damned important to "win" whatever contest it is we're having. Is the implication that it's possible to get by all right, to not be poor, without having lots of demanding manufacturing jobs? That doesn't sound so bad, actually; are we sure America doesn't want to sign up for that? Of course, if this is the nature of economic activity, and if America is determined to defeat other countries, it's worth asking whether it wouldn't make sense to deliberately sabotage other places, or bomb them; after all, it's hard to lose to a country whose people are dead. On the other hand, if victory is so important, we might expect other countries to retaliate, or preemptively attack. Maybe it would be better if the world divided itself into two competing but fairly isolated factions locked in a sort of "cold war".
Later, the president added:
Don’t let other countries win the race for the future.
The context, innocuously enough, was in calling for greater support for American research and development efforts. But the language of this statement is either daft or ghastly, depending on how charitably one is willing to read it. Is Mr Obama so dense as to miss that when America invents things other countries benefit, and vice versa? If a German discovers a cure for cancer, shouldn't we be ecstatic about that, rather than angry? Indeed, shouldn't we be quite happy and interested in ensuring that Germans and Britons and Indians have the capability and opportunity to develop fantastic new technologies?
In the more nefarious reading, Mr Obama seems to accept that only relative standing really matters. A sick, poor world in which America always triumphs is preferable in all cases to one in which America maybe doesn't "win" the race to discover every last little thing that's out there to be discovered. And hell, one has to ask again whether the easiest way to prevent other countries from winning the race for the future isn't simply to blow up their labs.
People who live outside of America are people just like Americans, and we should all rejoice in their rising prosperity, the more so when it occurs through additions to the stock of human knowledge that will benefit people everywhere. If an American president can't communicate that simple idea to his citizenry, out of fear that he'll be drummed out of office on a wave of nationalistic outrage, then he doesn't deserve to be president and his country doesn't deserve to win a damned thing, least of all the right to call itself "exceptional", a beacon of hope and freedom. A zero-sum world is a world without hope, and if Mr Obama is convinced that's what we're in then I don't see much need for him to stick around.