Ha-ha. Mexico. Third World joke. Actually, two centuries back, it had a bigger military than the United States. Like America, it was a settler society, but older and larger: Mexico City was founded in 1524, and, when Madrid belatedly recognized the independence of “New Spain” in 1821, the city gave its name to a country—and, indeed, empire: Imperio Mexicano. Not as silly as it may sound. Before the Louisiana Purchase, if you’d been asked to predict which settler capital, Mexico City or Washington, would emerge as the seat of power in post-colonial North America, many an analyst would have plumped for the Spaniards. They had an imperialist’s sweep: when they seceded from Madrid, they did so in a “Solemn Act of the Declaration of Independence of Northern America,” which definition stretched all the way north to what’s now the Oregon border and quite a ways south, to Panama. By comparison, the United States seemed a weak and vulnerable territory holed up east of the Appalachians. It was a land economically dependent on exports but with few strategic transportation routes and unable to protect its sea lanes.
And then Napoleon sold America the port of New Orleans. “I have given England a maritime rival who sooner or later will humble her pride,” he said, making mischief.71 But the Mexican border was less than 200 miles from the newly American port, and a mere hundred from the expanded republic’s critical artery, the Mississippi River. The wannabe Imperio, for its part, had a problem of its own. The land west of New Orleans, in the Mexican department of Texas, was mostly desert or mountains, and consequently lightly inhabited. So it suited the southern power to let American immigrants settle in this unpromising terrain—“doing the jobs Mexicans won’t do,” one might say. When Sam Houston decided it was time for northern settlers to rebel, the distant imperial capital of Mexico City had a hell of a time just getting troops through to Texas in order even to be able to hold a war. The defeats that left the U.S.-Mexican border where it is now delegitimized New Spain’s ruling class, destabilized the politics of Mexico City for the better part of a century, and led to the squalid and violent polity we know today.
There are, give or take, 200 countries in the world. If you had 20 million “undocumented” immigrants more or less proportionately distributed between those 200 countries—Irish, Uzbeks, Belgians, Botswanans—then maybe they would be assimilable, although even then it would be an unprecedented challenge. But borderland immigration is different. In British terms, consider not the rapidly Islamizing East London or Yorkshire, where Muslims are aliens replacing a native population, but think instead of Ulster: when Ireland came under the English Crown, Scots Protestants settled the north. When the south seceded to become the Irish Free State in 1922, the United Kingdom got a land border for the first time in its history.
The loyalists could have had all nine counties of historic Ulster for their Northern Ireland statelet, but insisted on a mere six because they knew they did not have the numbers to hold the other three. And even in the six counties thousands were murdered in the decades ahead. A border settles things, but only conditionally: for Irish nationalists in Fermanagh and Tyrone, the line meant nothing. This was Ireland, not Britain, and they had been there first. That’s how many Mexicans feel about the southern frontier: Arizona is Mexico, not the United States, and it was Mexico first. You don’t have to be a large minority to cause an awful lot of trouble—as the British found out on a small patch of turf where Irish nationalists were outnumbered two-to-one by Unionists. And you don’t even have to believe so fervently that you’re willing to kill and bomb. You just have to believe enough to live it, in your daily routine. In the Arizona of tomorrow, Hispanics will be not a minority but a majority: they will not assimilate with the United States because they don’t need to. Instead, the United States will assimilate with them, and is already doing so, day by day.
