SummaryCompaniesCommercial feasibility of $350 bln investments main trade obstacle with US, Lee tells ReutersPresident says talks with North Korea unlikely for nowLee frets tensions between democratic, socialist statesLee to be first South Korean president to chair UN Security Council meetingLee doesn't think Trump directed Hyundai immigration raidSEOUL, Sept 22 (Reuters) - South Korea's economy could fall into crisis rivalling its 1997 meltdown if the government accepts current U.S. demands in ...