He's for defending our borders at home and not policing the world, at large.
Ahh, theres the rub. You see my friend, everybody is for policing the world. That is because it is needed for Globalization. The fake conservatives, (i.e. 90% of the today's republicans) like it because it pays for and covers the risks of US corporations doing business globally (and it is the Corporate rich that owns the Republican party) all in the name of "free enterprise"! [Somehow, the notion that corporations are supposed to pay the full cost of doing business as an essential concept of "free enterprise" has escaped these born-again republicans] The liberals of course like it - since they love Government paying for anything. But to their credit, they advocate taxing the rich and returning the money to the losers. In the replublican system, more and more people are falling into the abyss, with outsourced and stagnant wages, because when Uncle Sam pays for all the corporate cost of doing business overseas (in the form of policing), the corporations can achieve outsized gains from investing overseas than they can here. If they had to bear the risk and cost (as they should in a real free-enterprise), globalization would proceed at a much more reduced pace.
But the dems are also bought into this mess. The only difference is that they hold on to the fantasy that they can compensate the public (for the corporate giveaways) by taxing the profits and channeling them to Average Joe through "retraining" and "redistribution". This sells very well in US academia but is completely bogus and unsustainable.
Ron Paul's problem is that he calls for Uncle Sam not policing the world which will cut globalization (not global trade) by 90%. Frankly, that would be good for the US over the long term, stabilize the dollar and allow globalization to resume at a normal pace (rather than through artificial stimulation) that all countries can absorb. But that goes agains the grain of 99% of economists, journalists, lawyers and other elites who have benefited handsomely by this artificially created massive trade with the 3rd world countries through US Government risk-coverage - so they shudder at that very thought.