The proposed changes would require the Army Corps of Engineers to adjust upstream water levels in reservoirs on the Missouri River to prevent downstream flooding.
President Barack Obama chose the Missouri congressman, along with a congresswoman from New York, to be representatives for the U.S. at the meeting.
Republican presidential hopefuls defended a health care program passed in 2003 despite unfunded future costs of more than $7 trillion.
The legislation would create new tax breaks for some businesses while cutting back or eliminating other credits for low-income housing, historic building renovation and for other programs.
The revision would require local school boards to develop policies on how employees and students communicate. The legislation has now been sent to the House.
Groups representing workers for the Water and Light, Parks and Recreation and Public Works departments and Columbia police officers have been negotiating with city officials since May.
The postponement of the debate allows senators to review a state department analysis of the costs and benefits of the "China hub" at the Lambert International Airport.
During the special session, senators are discussing creating a tax break incentive for international cargo shippers at the St. Louis airport, among others. Eliminating tax breaks for low-income disabled and elderly residents would help fund the new tax breaks.
The Missouri Senate began a special session Tuesday to debate topics such as the state's presidential primary and an overhaul of the state's business incentives.
A number of concerns have arisen over the ability of SynCare to fulfill its duties of providing support and assessment of health care plans. A provision in their contract with the state fines them $5,000 for every month they do not do so.
The House Interim Committee on Budget Transparency is expected to summon officials from the state Department of Health and Senior Services to a noon meeting Wednesday.
Gov. Jay Nixon said Wednesday there is "a solid shot" of including the tax break on the agenda for the legislative session that begins next Tuesday.
The laws, which go into effect at midnight on Sunday, come from both the Missouri Senate and House.
Although U.S. officials don't know the whereabouts of Moammar Gadhafi, President Obama said Gadhafi no longer has power in Libya.
Gov. Jay Nixon called for a special session of the Missouri General Assembly on Sept. 6 to discuss job creation priorities and recovery efforts for natural disasters.
Missouri's November 2012 ballot will include a proposed amendment that would require voters to show a government-issued photo ID. A public forum Sept. 14 will address this issue.
President Barack Obama plans to announce a broad package of tax cuts, construction work and help for the millions of Americans who have been unemployed for months.
The proposed Missouri ballot initiative would limit interest rates on payday, car-title and other short-term loans to 36 percent.
The Texas congressman believes in a very limited role for government. He finished second in this weekend's Iowa straw poll.
Some Republicans feared Pawlenty would not bring the fight to President Barack Obama if he were elected the GOP presidential nominee.