Prime Minister Harper is defending Saskatchewan Senator Pamela Wallin, whose expense claims are under close examination.

Wallin billed taxpayers $142,000 for trips during a 12-month period that ended in March of last year.

In the Commons, Harper said the costs are not out of line.

Harper adds that last year, Wallin spent almost half her time in Saskatchewan, the province she represents in the Upper Chamber.

Only $10,000 of her travel expenses were declared as travel between Ottawa and Saskatchewan.

The remaining $132,000 was filed under the term "other."

Wallin's appointment as a senator for Saskatchewan in 2008 raised some eyebrows because she hasn't lived in the province for decades.