Unless it causes a very noticeable drop in tourism - not on anecdotal level, but on the level of millions - about 70M tourists visit US yearly, so to make noticeable change, it probably should be like 10M at least - there will be no change. Note that there are literally millions of citizens who don't get a dime from tourists, don't care too much about tourists, but worry a lot about (real or imagined) threat of terrorism. They'd kick out any politician they perceive soft on border security faster than you can say "TSA".

The difference is that just about everyone in the US actually is positively affected by tourists (tax dollars) but not affected by terrorism (very low incidence of terrorism in the US). I'm not sure where the millions of Americans who don't get a dime from tourists exist.

The US is a sufficiently large enough domestic population that it self-generates and self-fulfills most of its tourism market. I was surprised myself when I looked up how lopsided it is. Similar can probably be said of China, EU, and perhaps Africa in a couple decades.

Overseas arrivals to the US is tracked in [1].

Domestic tourism represented 96.7% of the annual market in 2013. [2]

In the context of this thread's discussion of overseas visitors avoiding the US and its knock-on effects upon the US tourism industry, if overseas visitors 100% disappeared tomorrow, it wouldn't be a rounding error, but according to these statistics it's definitely not the political-economic club it's made out to be in these discussions. For better or worse, it is up to US citizens to vote in any changes in border control service delivery standards.

For what it's worth, many of the procedures I've heard people complain about have some basis in reasoning lurking in the background. International transits (where you land in a US airport but go onwards to a different country, never once stepping foot onto non-airport soil) requiring a security re-screening is explained in some places [3]. The cost to Americans getting People's Republic of China (PRC) visas traces back to diplomatic tit-for-tat, as PRC citizens visiting the US pay similar fees. Many security industry observers admire Israel's airport security, yet discussions like this thread neglect to mention Israeli border control also demands social network and email credentials, and the US is singled out for adopting an Israeli practice, when just scant few years ago the US agencies were excoriated for being too unenlightened to adopt Israeli practices [4].

Where I see room for improvement is service delivery, and education of citizens might help, while increased focus upon anchoring the mobility of capital to mobility of labor will definitely help. I've had my share of visa issues traveling into Canada as a US citizen, but the staff were unfailingly polite while still being hard-nosed, while I hear of other US citizens getting hassled at the Canadian border. I've had minor snafus in border crossings into Mexico and the PRC as well, and I was treated politely there, too. My attitude in all of these interactions was, "Ah, sorry I made your day harder just now, what can I learn about what I missed with regards to the policy so I don't make the same mistake again, what is the rough, overall process and timeline to fix it this time around, and what is the detailed next action item (who/where/what/how)?" This has never failed to elicit the officer politely, sometimes gladly, assisting me, so maybe this helps others. YMMV, of course.

[1] http://travel.trade.gov/research/monthly/arrivals/index.asp

[2] http://www.eturbonews.com/53328/research-domestic-tourism-si...

[3] https://www.quora.com/Airports-Why-do-you-have-to-go-through...

[4] https://www.quora.com/Is-it-justifiable-for-the-Ben-Gurion-a...

All those things are. The question is, how much do these things affect the above? This has been going on since W Bush on; the Obama and to the present, and as of yet, the impact would seem surmountable, i.e. negated by the majority of people who travel anyway and conduct business anyway.

Your life was not online as much that is changing. Facebook didn't even exist under Bush

True, but I suspect we will see other countries do the same, not as retaliation, but more because they'll want catch up to the US in terms of border security ...and it will become a normal thing except in third world counties too inept or poor or corrupt to care to implement this where the dissidents will be free from hassle, for a while.

The world is going through it isolationist phase so yes it is likely other countries will do the same. Though in the future I am seeing a possibility where governments ask for your social media handles and all that data is trawled using an ai which assess your risk profile according to the needs of the government asking the questions. Instead of all your private data getting into the hands of the government or outside third party it accessed and processed by an AI. Personally I would not mind such an AI scanning my profile data as long as the parameters of the questions are already set and the data is not seen by any humans.

This will have a broad chilling effect. You can't deviate from the norm anymore. I would be worried very much if my fate lies in the hands of an AI where there is neither transparency nor recourse.

You dont have a recourse with immigration officers who can be a racist homophone or have any other hangups to reject your entry to a country. But if its AI it is more likely to look at what is relevant such as are you going to overstay or have nefarious reasons to enter. Nothing to do with your race sexual orientation or religion.

There is already no recourse in the immigration system.

I had a Facebook account before Bush won his second election, in 2004.