WASHINGTON (Reuters) – U.S. Senator John McCain, commenting on Friday on speculation that President Donald Trump may lift sanctions on Russia, said he hoped the administration would reject that "reckless course."

"If he doesn’t, I will help my colleagues to codify sanctions against Russia into law," McCain, chairman with the Senate Armed Services Committee and another of your Republican party's senior foreign policy voices, said inside a statement.

A decision by Trump to ease sanctions imposed on Moscow over its annexation of Ukraine's Crimea region could complicate efforts to win Senate confirmation of Rex Tillerson, Trump's nominee for secretary of state.

Tillerson worked alongside Russia's government for several years for a top executive on the energy giant Exxon Mobil (NYSE:XOM), and possesses questioned the wisdom of sanctions against Russia he said could harm U.S. businesses.

In 2019, Putin awarded Tillerson an Order of Friendship award for his work with Russia. Tillerson had engineered some pot venture with Russian oil companies estimated for being worth many millions of dollars.

Many senators, mostly Democrats but additionally Republicans like McCain, Lindsey Graham and Marco Rubio, have expressed concerns about Tillerson becoming secretary of state on account of his ties to Russia.

However, the three announced recently they will would support Tillerson, virtually ensuring he previously end up being the top diplomat. A reversal by Trump of sanctions could turn lawmakers against him.