Player of the Week: Sen. Carl Levin (D-Mich.)

 It is rare for Sen. Carl LevinCarl LevinThe Fed and a return to banking simplicity What Our presidential candidates can learn from Elmo Zumwalt Will there be a 50-50 Senate next year? MORE (D-Mich.) and President Obama to be publicly at odds on anything. 

But on language about detainees in Levin’s defense authorization bill, they disagree sharply.

Levin, chairman of the Armed Services Committee, takes issue with Obama over how terror suspects should be prosecuted and detained. The White House this month threatened to veto Levin’s bill, claiming it would tie the hands of intelligence and law-enforcement officials. 

Sen. John McCainJohn McCainGOP lawmakers slam secret agreement to help lift Iran bank sanctions Kerry: US 'on the verge' of suspending talks with Russia on Syria Trump, Clinton to headline Al Smith dinner MORE (R-Ariz.), ranking member on the panel, who was defeated by Obama in the 2008 presidential race, accused the administration of playing politics with its veto threat.

Levin and McCain are not backing down. On Monday, they penned an op-ed in The Washington Post defending their measure and noting that it was unanimously approved by the Armed Services Committee.

The bill stipulates that al Qaeda terror suspects should be taken into military custody, though it provides a waiver for the executive branch to move suspects under the jurisdiction of federal law enforcement officials.

There are powerful congressional critics of the Levin-McCain provisions, including Judiciary Committee Chairman Patrick LeahyPatrick LeahyOvernight Tech: TV box plan faces crucial vote | Trump transition team to meet tech groups | Growing scrutiny of Yahoo security Leahy wants Judiciary hearing on Yahoo Overnight Cybersecurity: FBI probes possible hack of Dems' phones | Trump's '400-pound hacker' | Pressure builds on Yahoo | Poll trolls run wild MORE (D-Vt.) and Intelligence Committee Chairwoman Dianne FeinsteinDianne FeinsteinElection-year politics: Senate Dems shun GOP vulnerables Senators already eyeing changes to 9/11 bill after veto override WH tried to stop Intel Dems' statement on Russian hacking: report MORE (D-Calif.). 

This is all a headache for Senate Majority Leader Harry ReidHarry ReidThe missed opportunity of JASTA States urged to bolster election security How the White House got rolled on the Saudi-9/11 bill MORE (D-Nev.), who wanted the bill approved before Thanksgiving. 

Still, the Senate is scheduled to bring the legislation forward this week. How Levin handles this delicate issue will be revealing. He wants his language in the law but does not want to provide political ammunition to Republicans running to oust Obama from the White House in next year’s election. 

Asked by The Hill if he was given advance warning by the White House before the veto threat, Levin didn’t answer directly, saying he assumed the administration would threaten a veto. 

In many ways, the fight over the detainee language is the latest in the never-ending battle between the executive and legislative branches. And both sides are refusing to blink.