Senate Homeland Security and Governmental Affairs Chair Ron Johnson suggested Wednesday that fellow Republicans on his committee were blocking him from subpoenaing former FBI Director James Comey, former CIA Director John Brennan and other figures involved in the investigation of President Donald Trump's 2016 campaign and its contacts with Russia — even though the panel gave him the unilateral power to do so in the spring.

"We had a number of my committee members that were highly concerned about how this looks politically," the Wisconsin GOP senator told conservative radio host Hugh Hewitt, who pressed Johnson to identify Republicans standing in the way of a wave of high-profile subpoenas.

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