Senate Democrats reportedly plan to investigate US companies involved in the deal, while Republican warhawk Brian Fitzpatrick has tabled a bill blocking Russian oil imports outright

A number of American lawmakers intend to block the Trump administration’s deal to ease sanctions on Russian diesel through April and are threatening action against US companies involved in the trade. The bipartisan group is also planning to block the US Treasury from issuing such a waiver in the future.

US President Donald Trump announced the deal earlier this month, as US diesel prices hit a record $6.50+ per gallon in September and prices in parts of California topped $8.…