Source: U.S. Bureau of the Census
Release: Advance Economic Indicators
This advance estimate represents the current month statistics of nearly complete coverage. The current month statistics reflecting complete coverage is available on the Census website at the U.S. International Trade in Goods and Services report (FT-900) https://www.census.gov/foreign-trade/statistics/historical/index.html, the corresponding series in FRED is at https://fred.stlouisfed.org/series/BOPGIMP
For more information on data collection and methodology, see https://www.census.gov/econ/indicators/methodology.html
U.S. Bureau of the Census, Advance U.S. International Trade in Goods: Imports [AITGIXS], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/AITGIXS, May 22, 2018.