I know we tend to see things in political terms—left vs right, Democrats vs Republicans etc but in this particular case we have a different paradigm:
—The House vs The Senate
They do have institutional interests that are separate. Usually those are “inside baseball” and of little interest to outsiders.
This could be the rare exception to the rule.
To drill a little deeper:
House members have to face re-election every two years so they need lots of money to deter potential primary challenges as well as run campaigns.
Defense contractors can meet that need—and keep House members in line.
Senators have a little more running room with six year terms and state wide races and fundraising sources—and if they get mad enough at the defense contractors they can afford to say “no”.
Good point.