All lobbying filings

CORNERSTONE GOVERNMENT AFFAIRS, INC.

Lobbying for COVINGTON AIRCRAFT ENGINES INC. · Aircraft maintenance and support

Filing 4th Quarter - Report

Reporting period

4th Quarter 2025

Oct 1 - Dec 31 · Posted Jan 12, 2026

Income

$30,000.00

What the client paid this registrant for the period.

Client based in

Oklahoma

Official filing document

Lobbyists on this filing 1

BRIAN HACKLER

Previously held: Deputy Chief of Staff, U.S. Senate; State Director, U.S. Senate; Field Representative, U.S. Senate; Non-commissioned Officer, U.S. Marine Corps.

A "covered position" is a government job the lobbyist held in the 20 years before registering, which the law requires them to name. See the revolving door for former members of Congress across all filings.

Government bodies contacted 3

Commerce, Dept of (DOC)
SENATE
White House Office

The chambers, agencies and offices the filer named. It does not say who inside them was contacted, or when.

Lobbying activity 2

Defense

Issues related to Section 301 Tariff policy.

Tariff (miscellaneous tariff bills)

Issues related to Section 301 Tariff policy.

Source: federal Lobbying Disclosure Act filing, reproduced as filed. Bills are parsed from the activity descriptions.