Our chapter on interest groups discusses ways in which lobbyists seek to influence officials.
The St. Louis Post-Dispatch reports:
While members of the Missouri Legislature are sequestered in Jefferson City,  they work long hours but rarely go hungry, thanks to a dedicated corps of  lobbyists and interest groups that spends hundreds of thousands of dollars a  year on food.
Lobbyists typically spend more than $400,000 a year feeding groups of  lawmakers, buying food virtually every day the House and Senate meet.
During the 4½-month session that ends in May, it is difficult to walk through  the Capitol and not see a trade association or government relations firm feeding  lawmakers breakfast, lunch or late-afternoon snacks.
...
Lobbyists who buy food for lawmakers aren't necessarily seeking a quid pro  quo, — "a pork steak for a vote" — said John  Messmer, a professor of  political science at St. Louis Community College's Meramec campus.
What they are trying to do, Messmer said, is forge a relationship that could  pay off later. By buying their meals, lobbyists are gaining access to  legislators.
"We would be outraged if other professions did this," Messmer said. "But we  turn a blind eye to it — most of us do — when it comes to our Legislature."
Lobbyists say they buy food for lawmakers for the same reason they take  legislators to baseball games or contribute to their campaigns — for a subtle  advantage that may help their client or cause.
States vary greatly in what their legislators can accept from lobbyists and others.  The National Conference of State Legislatures has
 a chart here.
 
The Defense Department decided in April to pay an extra $225 a month in “imminent danger pay” to service members who fly planes over Libya or serve on ships within 110 nautical miles of its shores.