A workshop was held at the office of the National Park Service, Air Resources Division (NPS, ARD), in Lakewood, Colorado in November, 2008 to evaluate the feasibility of initiating a research effort in the United States. The initial focus was on nitrogen (N) effects on alpine and subalpine plant communities. These plant communities were selected because such high elevation ecosystems are generally quite sensitive to effects from atmospheric deposition of N and sulfur (S), and because many of the plant species found in these ecosystems in the United States are the same as those found in Europe. Funding for this workshop was provided by National Park Service (NPS) and the U.S. Environmental Protection Agency (EPA). A small group of scientist who are actively involved in vegetation response research in the alpine and subalpine environments in the United States were invited to participate. The purpose of this report is to summarize the workshop presentations and findings.