Scott Jennings, a CNN contributor, is a former special assistant to President George W. Bush and former campaign adviser to Sen. Mitch McConnell. He is a partner at RunSwitch Public Relations in Louisville, Kentucky. Follow him on Twitter @ScottJenningsKY. The opinions expressed in this commentary are his own. View more opinion articles on CNN.

(CNN) The partisan warfare over the Mueller report will rage, but one thing cannot be denied: Former President Barack Obama looks just plain bad. On his watch, the Russians meddled in our democracy while his administration did nothing about it.

Scott Jennings

The Mueller report flatly states that Russia began interfering in American democracy in 2014. Over the next couple of years, the effort blossomed into a robust attempt to interfere in our 2016 presidential election. The Obama administration knew this was going on and yet did nothing. In 2016, Obama's National Security Adviser Susan Rice told her staff to "stand down" and "knock it off" as they drew up plans to "strike back" against the Russians, according to an account from Michael Isikoff and David Corn in their book "Russian Roulette: The Inside Story of Putin's War on America and the Election of Donald Trump".

Why did Obama go soft on Russia? My opinion is that it was because he was singularly focused on the nuclear deal with Iran . Obama wanted Putin in the deal, and to stand up to him on election interference would have, in Obama's estimation, upset that negotiation. This turned out to be a disastrous policy decision.

Obama's supporters claim he did stand up to Russia by deploying sanctions after the election to punish them for their actions. But, Obama, according to the Washington Post , "approved a modest package... with economic sanctions so narrowly targeted that even those who helped design them describe their impact as largely symbolic." In other words, a toothless response to a serious incursion.

But don't just take my word for it that Obama failed. Congressman Adam Schiff, who disgraced himself in this process by claiming collusion when Mueller found that none exists, once said that "the Obama administration should have done a lot more." The Washington Post reported that a senior Obama administration official said they "sort of choked" in failing to stop the Russian government's brazen activities. And Obama's ambassador to Russia, Michael McFaul, said , "The punishment did not fit the crime" about the weak sanctions rolled out after the 2016 election.

Read More