Luckey caught up with his prey and struck him in the back of the head with the weapon before chasing him into the hotel lobby ... but declined their invitation to join them.

This continues an upward trend that began in 2016. With increases in lobby dollars, it's important to understand why lobbying is legal and why it's important for a productive government.

Many governments, companies and other entities pay foreign agents to influence U.S. policy and opinion in pursuit of those interests. Get the full picture of who is lobbying government officials.