All hype aside, in the next decade where will more US jobs be lost, to foreign labor, or to machines?

When it comes to jobs (or the lack of them) some people want to rail against foreign labor (especially if undocumented), or foreign labor as in outsourcing due to the greed of the 1%ers. In reality, over the next decade where are most jobs going to be lost to? As machines get smarter, less expensive and more versatile, the driverless truck project for one, it is plausible machines will displace more of the existing workforce. Which do you believe will take more US jobs over the next decade, foreign labor or machines?