(Reuters) – Global companies that make baby formula are bringing products into the United States after the country’s health regulator relaxed its import policy to address a nationwide shortage partly triggered by Abbott Laboratories’ manufacturing plant in Michigan recalling some products in February. Importers include Neocate maker Danone SA, while New Zealand’s dairy giants Fonterra and a2 Milk have submitted applications to the U.S. Food and Drug Administration (FDA) for supplying baby formula to the United States. Once the products arrive in the country and receive a sign-off from the FDA,…