Probably sending in more than 10K and sending out smaller amounts to leave you with the tax bill since 10K+ are reported directly to the IRS.
No. You only pay tax on the 'profit' you make. So, if this was legit, you would only pay tax on your 'salary' and 'commission'. On your tax return, you would report 'income' and 'expenses' and only pay tax on the difference.
However, all transactions above a certain limit ($10k) get reported, and 'suspicious' transactions smaller than that get reported.
Accounts with this type of 'suspicious' activity, get flagged for investigation of possible money laundering or other criminal activity (e.g. drugs, for tipping-off the DEA, etc.)
The idea is to remove attention from the crooks' bank accounts. This way, all the red flags come up on your personal account. By the time the cops trace you, and investigate you, the crooks will have abandoned the accounts that you sent the money to. This way you get all the trouble and inconvenience of getting your private dealings investigated so closely that even a colonoscopy looks modest.