The following commentary originally appeared in Fox News Politics on FoxNews.com, the website of the Fox News Channel:

U.S. Sen. Susan Collins said on Wednesday she’s open to using a subpoena to investigate President Donald Trump’s tax returns for potential connections to Russia.

Collins, a Republican who has served as a U.S. senator from Maine since 1997, sits on the Senate Intelligence Committee, which is investigating Russian interference in the 2016 election. She appeared on Maine Public radio to talk about issues including the investigation.

Collins was asked if the committee would subpoena Trump, who’s also a Republican. She said she hopes for “voluntary cooperation” but is open to using a subpoena if necessary.

“This is a counter-intelligence operation in many ways. That’s what our committee specializes in,” she said during the radio appearance. “We are used to probing in depth in this area.”

Read More:  http://www.foxnews.com