Call their office (D.C., preferably) or submit a comment noting the issue and your concerns about it. Be dispassoinate. Unless you really know what the fuck you're talking about, avoid suggesting solutions. (You want to avoid the crackpot bin.)
This is a really good week to do this, because budget negotiations are being finalised in both houses.
[1] https://www.commerce.senate.gov/commerce-subcommittees
[2] https://transportation.house.gov/subcommittees/subcommittee/...