First, establishing an official language won't prevent marketing and labeling from being printed in non-English languages. That kind of stuff will be printed in whatever language that will sell a product and make a company money. Any enacted law that prohibits alternative language labeling and marketing would not only be an infringement of free speech, but also restraint of trade. Restraint of trade is usually applied to things like no-compete clauses in termination contracts to prevent someone from leaving a company and then starting another company in direct competition with the former company, especially if the new company uses the former company's customers or ways and means to do business. It's also used in the sale of a business, like when Panther bought Con-Way NOW, an agreed upon restraint of trade clause stated that Con-Way NOW would not re-enter the expedite sector for a specified period of time. One of the keys to restraint of trade is that both parties must agree to it, and it must be in the interest of the public at large.
The landmark common law doctrine ruling is from 1711, where it was stated:
"it is the privilege of a trader in a free country, in all matters not contrary to law, to regulate his own mode of carrying it on according to his own discretion and choice. If the law has regulated or restrained his mode of doing this, the law must be obeyed. But no power short of the general law ought to restrain his free discretion."
They key there is that the law must be obeyed, but it must be a general law, not a specific or local law, and it must be one that is in the interest of the public at large. An example of a local law that wasn't in the best interest of the public at large, and therefore was an illegal restraint of trade, was back a few years ago when the tolls on the Ohio Turnpike were raised, and lots of truckers took to US 20 across Ohio instead of the Turnpike. In response, local municipalities enacted ordinances prohibiting heavy trucks from using US 20 through their towns, but those laws were found to be an illegal restraint of trade and a violation of interstate commerce laws.
If we were to enact a law with an official language that also prohibited businesses from labeling or marketing products in whatever language they wish, it should have been done 30 or 40 years ago when the "public at large" was a wholly different demographic comprising a relatively minuscule percentage of non-English speaking Mexican and Asians. But that ship has sailed and is no longer relevant. About 83 percent of the U.S. population growth since 2000 was non-white minorities, part of a trend that will see minorities become the majority by midcentury. Across all large metro areas, the majority of the child population is now nonwhite
(Populations Shift). Legislating an official language won't reverse the realities, nor would it be in the interest of the public at large. It would be in the interest of the dwindling white minority trying to hold on with their fingernails to what they have, tho. Nobody likes change, especially those who are in charge when the change negatively affects their power.
Clearly, the biggest problem we face is the federal government's abject failure to secure the borders of this country. No one can blame anyone for wanting to come here to make a better life for themselves or their families. And with unsecured borders across Mexico in particular, the risk of coming here illegally far outweighs the prospects of remaining in Mexico. If I were Mexican I'd want to come here, legally if possible, but illegally if that's the only way to get out of Mexico.
We are, after all a nation of immigrants. With few exceptions, none of us would be here if it were not for our ancestors coming here from someplace else. So it's hard for us as a country to want to put a stop to immigration. But it's the illegals that everyone has a problem with, and we take it out in the illegals, but it's really the federal government that is to blame and should be the target of our anger. Unsecured borders is tantamount to an unlocked and open door, which is an invitation to come on in, make yourself at home, and that's exactly what many Mexicans are doing (since it's primarily Mexicans that we're talking about here).
Another problem with the open door is that the door itself, open or shut, is a relatively recent addition. Texas was
another country just 165 years ago. California didn't become a state until 160 years ago. Arizona and New Mexico didn't become part of the United States until 98 years ago, with only Alaska and Hawaii having been added more recently.
In the interest of putting the shoe on the other foot, or walking a mile in another man's shoes, as it were, consider this: Before 1912, and for many years and generations since, the indigenous people of those regions passed across the border with the same ease as those who cross the border between Michigan and Ohio today, or those who live in northern Kentucky and work in Cincinnati. The people of northern Mexico, New Mexico, Arizona, California and Texas have family on both sides of the border, their lives are on both sides of the border, they have a recent and long-term history on both sides of the border. Whitey isn't the only one who has a tough time with change. To further complicate things, the US government's failure to secure the borders and to regulate, implement and enforce immigration laws for many years has resulted in a de facto open border with Mexico, so it's not hard to understand the resistance to change from the non-white people who live in those areas, on both sides of the border. Can you imagine the outrage, not to mention the resistance to change, if the Ohio River suddenly became a national border, or a border in which Kentucky or Ohio authorities demanded proof of citizenship before allowing you to enter? Well, that's what has happened along the Rio Grande in Texas, and to an even greater extent in New Mexico, Arizona and California where there isn't a natural river border to mark things.
It's easy to sit back in the Midwest and non-border states and snarl at those evil Mexicans for wanting to come here any way they can to better themselves, but the issues are not quite so brown and white as many people think, or perhaps want them to be. I used to think the same way, until I started traveling a lot in places like Texas, New Mexico and Arizona. Plus, I have an aunt who retired from government service out of Washington D.C. and retired to Tuscon, and for someone as rigid in her thinking on issues of immigration and illegal aliens, to see her do such a dramatic shift in her thinking is not something to be dismissed or taken lightly.