It could be just a wish but if the senate really want they could do this:
Delaying bills
The Senate can also delay a bill, or decide not to act on it. Without being formally rejected, a delayed bill dies at the end of the session.
In certain circumstances, Senate action or inaction can persuade a government that it needs to go to the people for a new mandate.
In 1988, Canadians got to vote on the free trade agreement with the United States because the Senate delayed Bill C-130, to implement the agreement. The government called an election on the issue. As soon as it was re-elected, the government submitted a similar bill that Parliament passed expeditiously.
In other cases, the Senate can delay a bill in order to give it more careful scrutiny that it received in the House of Commons and to draw greater public attention to the issue at hand.
Bill C-10 was one such case. A large and complex tax bill, it had had a quick examination in the House before arriving in the Senate in December 2007. There had been no expectation of controversy, but in March 2008 Senators responded to urgent calls from the Canadian film industry. The bill contained a clause that, they felt, would amount to censorship by allowing the Minister of Heritage to arbitrarily deny finished film productions a crucial tax credit. Other groups clamoured to address the committee about this or other concerns. The committee continued its study, and the bill died when Parliament was dissolved in September 2008.