  In the context of the 2013 APS-DPF Snowmass summer study conducted by the
U.S. HEP community, this white paper outlines a roadmap for further development
of Micro-pattern Gas Detectors for tracking and muon detection in HEP
experiments. We briefly discuss technical requirements and summarize current
capabilities of these detectors with a focus of operation in experiments at the
energy frontier in the medium-term to long-term future. Some key directions for
future R&D on Micro-pattern Gas Detectors in the U.S. are suggested.
