The letters were sent to each of the major banks in the US and will likely force them to freeze any attempts by the Trump administration to continue sales." Trump's "diesel deal" with Russia drew bipartisan criticism in the US Congress. Members of Congress have expressed concern that the deal will provide Moscow with new revenue to fund its war against Ukraine, and have taken steps aimed at reducing the number of people willing to buy Russian oil in the United States. Several members of Congress sent letters to American banks, port authorities and fuel distributors in the United States reminding them that although the White House issued a license to supply Russian diesel fuel to the country, such actions were previously prohibited by a special law. The letters were sent to the largest American banks, as well as to ports in Texas, New Jersey and New York.