The phrase "deliberating about whether" is correct and usable in written English.
This phrase is used when you want to express that you are giving a lot of thought to whether something is true or false, right or wrong, or just making a decision about something. For example: "We are still deliberating about whether we should buy the house or not."
European nations are deliberating about whether to strengthen their emissions-reduction target to 30 percent below 1990 levels by 2020.
He said he was still deliberating about whether to expunge the $110,000 he still owed his bank by declaring personal bankruptcy.
As the writer sat deliberating about whether she could afford them, she watched the Greenwich woman go to the cashier's desk.
Jurors in the trial of the two former Enron chief executives, Kenneth W. Lay and Jeffrey K. Skilling, began deliberating about whether they defrauded investors by lying about Enron's financial condition.
Torre, whose three-year, $13 million contract expires after this season, had been deliberating about whether to return after a disappointing season on the field and a distracting one off it, with the bitter divorce case between the Dodgers owner Frank McCourt and his wife, Jamie, as a backdrop.
Suppose that on some occasion a certain individual, Leo, is deliberating about whether to tell the truth or to lie.
Mr. Spector had also deliberated about whether the bridge belonged in Jerusalem.
As it deliberates about whether to feature the Salahis on the "Housewives" series — a decision that is months away, according to Bravo — NBC Universal may also have to consider its corporate interests.
She deliberates about whether to A or to B. She recognizes reasons favoring each alternative and judges those favoring A-ing to be better.
Consider, for example, the situation in which I will find myself later today, when I deliberate about whether to attend the concert tonight.
On this view, a beneficiary who has to deliberate about whether to act gratefully, and then exert an effort of will to act on the outcome of his deliberation, falls short of gratitude.
