The amount Missouri hospitals charge the state for examinations to collect evidence from sexual assault victims varies widely between hospitals.
Lawmakers say the state should set a cap on the rates it pays.
Data from the Department of Public Safety shows the state paid $35.40 for a lab test at a Kansas City hospital and more than $1,500 for an examination at a Harrisonville hospital. The state paid an average of about $784 per examination last year.
Missouri Senator Claire McCaskill is calling President Obama's budget a starting point to begin the conversation between Democrats and Republicans.
The Democratic senator says she is anxious to see the Republicans' budget plan in the House. But McCaskill is also criticizing the GOP for focusing on the discretionary domestic budget, which, she says, is only 18 percent of the budget.