KEY POINTS
  • Florida Sen. Marco Rubio's proposal to end preferential tax treatment of share buybacks is specious, argue two of his Republican colleagues.
  • "They occur after the investment has been made" in the business and the profits have been generated, says Sen. Pat Toomey, R-Pa.
  • Sen. Rick Scott, R-Fla., says, "If companies can't figure out how to get a better return on the cash," they should give it back to the shareholders.

GOP Sen. Marco Rubio's proposal to end preferential tax treatment of share buybacks is flawed, two Republican colleagues of the former presidential candidate told CNBC on Thursday.

"I don't see buybacks as a problem," Sen. Pat Toomey, R-Pa., said in a "Squawk Box" interview. "They occur after the investment has been made" in the business and the profits have been generated, he said.