They've been one of the main sponsors of the US Open Tennis for quite awhile... I'm sure Delta had the chance to go all in... unfortunately we aren't backed by terror petro dollars and the sole US Gov/Mil supplier of seats to the ME region thanks to a code share w/ a US airline... JetBlue.
The lobbyist rule the roost on capitol hill... give to the AlpaPac and inundate your reps w/ correspondence regarding the issue... in the end if they don't support Open Skies (and fighting the violations of the ME3) then vote against them...
Unfortunately that's all we can do.
Give to the PAC... don't be a chump.
Tail