"While Mary LandrieuMary Loretta LandrieuSenate GOP rejects Trump’s call to go big on gun legislation Project Veritas at risk of losing fundraising license in New York, AG warns You want to recall John McCain? Good luck, it will be impossible MORE supported sequestration, the outcome has resulted in an understaffed Federal Aviation Administration, causing hours of delays for Louisianans and other passengers across the country," says one version of the email.

"Unfortunately for Louisiana's flying public, the realization of sequestration headaches has yet to prod Mary Landrieu to undertake any real action to fix it. In fact, Landrieu voted twice against measures to prevent sequester related flight delays," it continues. "While President Obama and Washington Democrats desperately attempt to salvage the legitimacy behind forcing Louisianans to foot the bill for their tax-and-spend ways, Landrieu must choose between D.C.’s political games and the tired folks in Terminal A."

Mounting flight delays caused by sequestration are occurring nationwide, aggravating travelers from coast to coast. Both parties are seeking to blame the other — once again — for causing sequestration.

Democrats pushed back on the attacks.

"It's clear the NRSC needs to do a better job of raising money, recruiting candidates, and getting their facts straight," said Democratic Senatorial Campaign Committee spokesman Justin Barasky.

This post was updated at 5:45 p.m.