IDK what you all are talking bout now but i will answer the original question
The world will of had another major war(We are close enough to it now), secondly if we have Obama again as a president for another term(This scenario could happen this November), there will be Despotism(or exercise of absolute government) and the Declaration of Independence says, "We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness. — That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, — That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness. Prudence, indeed, will dictate that Governments long established should not be changed for light and transient causes; and accordingly all experience hath shewn that mankind are more disposed to suffer, while evils are sufferable than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security....", so we will revolt, we are close enough to it without Despotism with racial tensions, Political tensions, and rights being taken away[an old example is like when Abe Lincoln took away the Right of Speech, endowed to us by the First Amendment of the Constitution, during the Civil War and anyone who spoke against the Union was put to jail without the Right for speedy and Public Due Process by Jury, also endowed to us by the Sixth Amendment].
So, in consequence of that the U.S.A. will have had the Second Civil War, but still withhold its name, hopefully.
Although with Mortality rates being stabilized, there will be an equal opposite force, starvation and crowded living space.Not only will there be lack of food for the population, but there will be a lack of producing food, from less farm land and plants.While speaking of lack of plants, there will be more people with Asthma and a much lower air quality.
I wouldn't doubt Mexico and the U.S.A. being enemies.For the Border States have the Right(RIGHT NOW!) to declare war upon them anyway.Evidence Constitution~"No State shall, without the Consent of Congress, lay any duty of Tonnage, keep Troops, or Ships of War in time of Peace, enter into any Agreement or Compact with another State, or with a foreign Power, or engage in War, unless actually invaded, or in such imminent Danger as will not admit of delay."
The World Economy will be better in wants than needs, as we see it more appropriate to be entertained than to eat nowadays.
I would like to say more but I have a limited time on the Internet right now, at this instance...