Senators threatened retaliation if colleagues didn't "give way", attempted to constrain them in their duties, says speaker
Once the bill has been read a third time, it will be returned to the House of Commons for further debate
Conservatives table motion in the House of Commons to call for Senate to pass bill
New amendment to farm fuel bill now under debate
Conservative shadow minister says new Liberal senators set bill up for failure
The bill, which would see farm propane and natural gas exempted from the carbon price has been in the Senate since March
Divided senators defeated an amendment to make it more difficult to extend the bill's sunset clause
Groups expressed disappointment over the amendment, which will also slow the bill’s progress
Manitoba MP's private member's bill clears Senate
Private member's bill now awaits Senate approval
