Public appearances might not have been the only reason for that decision, Dingell and Stupak allege in their letter.
Harrington, who was beaten in a play-off by Jimenez last year, gave no reason for his decision to pull out.
The German car manufacturer, which took over Sauber in 2005, has cited "current developments in motorsport" as the reason for their decision.
Mr Hagel's strained relations with the Republican party leadership were seen as a reason for his decision not to pursue a White House run in 2008.
The Baggies lost 3-0 at Manchester City on Saturday and the club said a run of 13 defeats in 18 games was the reason for the decision.
And a big reason for the decision is an incentive package offered by the state of Kentucky, which has been on a drive to keep the companies that have invested in the state.
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After former Philadelphia Flyers winger Arron Asham signed with the rival Pittsburgh Penguins over the weekend, his agent wasted no time revealing the reason for his decision to take less money with the team.
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"The reason for this decision is that the Security Service assess that you have been involved in Islamist extremism and present a risk to the national security of the United Kingdom due to your extremist activities, " the letter says.
"For this reason the final decision has been referred for the full council to make in July, " he added.
Allen highlighted the recession hitting local businesses as a major reason for a reason for the club's decision to cut the budget.
No reason has been given for the decision not to renew the contract of Wilkins.
BBC: Chelsea part company with assistant manager Ray Wilkins
But the main reason for the government's decision to open the taps is its desire to plug its budget deficit.
Some believe there is a wider political reason for Mr Brown announcing this decision now - just as President Obama decides whether to send more American forces to Afghanistan.
The boss of Greenland's Bureau of Minerals and Petroleum, Jorn Skolv Nielsen, describes it as a big reason for the bureau's decision to open Greenland's western Disko Bay, where Cairn Energy drilled in 2010-11.
People are disappointed and frustrated with politicians, which was a major reason in my decision to run for office.
No reason was given for Daly's decision not to take the stand during a trial which heard evidence in Dublin as well as Belfast.
That may be another reason for the Fed to postpone a decision on QEII until its December meeting, rather than risk being accused of playing politics.
No reason has been given for Hunter's decision to drop the divorce case.
Israelis and Arabs approve and deplore the decision for the same reason: the new town, to be called Har Homa, would complete the ring of Jewish-only estates that divide Arab East Jerusalem from its West Bank hinterland, making it extremely hard to see how East Jerusalem could ever be the capital of a Palestinian state.
It was easier for Nicolas Sarkozy to take a quick decision regarding Libya than on the Ivory Coast for this reason.
While noting the audio recording and playback capabilities were motivation for this decision, he explains the reason it's classified as a requirement is because it lets students include it in their financial need estimate -- wholly beneficial when you're figuring out scholarships and loans.
Although the regime did not explain the reason for the boycott, university officials attributed Tehran's decision to YIISA's activities in spotlighting the regime's role in promoting genocidal anti-Semitism.
It was the right decision, even if I made it for the wrong reason.
Exactly for these reasons, all the MORE reason to commend Coach Girardi for his intestinal fortitude of focusing on the present in making this decision.
The debts have been incurred for a reason or reasons that stem from the design of a bizarre system of subsidy, and decision making that ignores markets.
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But in terms of an inquiry, I'm not currently minded that we need to have a U.K.-based inquiry on this -- partly for this reason: I don't need an inquiry to tell me what was a bad decision.
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The reason that this was such an important decision becomes clear when you consider how hard it is to develop Apps for each different piece of mobile hardware and wireless service provider (WSPs).
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