PUERTO ORDAZ, Venezuela, April 13 - Venezuela's https://www.reuters.com/world/venezuela/ effort to attract foreign investors to develop its gold, iron and bauxite seams has enthusiastic backing from the Trump administration but faces big challenges, including armed groups with deep interests in the chaotic, largely illegal prospecting industry that has developed over the past 20 years, according to nine miners, residents and community activists who spoke to Reuters. Read more at straitstimes.com. Read more at straitstimes.com.