(CNN) – Sen. Tom Coburn became the latest Republican lawmaker to link President Barack Obama to potential grounds for impeachment during a town hall Wednesday.
The Oklahoma Republican – who also said Obama was a "personal friend" – responded to a question from a constituent by asserting that the president's policies were approaching a legal standard for impeachment.
Without using specifics, Coburn cited "intended violation of the law" by Obama's administration, as well as general incompetence of some of his appointees.
"I don't have the legal background to know if that rises to high crimes and misdemeanors – but I think they're getting perilously close," Coburn said, according to a YouTube video posted Thursday.
He also acknowledged that as a senator, he wouldn't play a role in proceedings until the House voted to impeach Obama – but still said he was keeping track of potentially impeachable offenses.
"I'm documenting all this as it does along," he said. "I don't know where that level is – I'm kind of like the lady in the back. I'm fed up. I'm frustrated. I'm happy to raise an issue at every point."
"He's in a difficult position he's put himself in," the Republican lawmaker continued. "And if it continues I think we're going to have another constitutional crisis in this country in terms of the presidency."
The idea of impeaching Obama has come up several times recently, including when Republican Rep. Blake Farenthold told his Texas constituents earlier in August that the House of Representatives "could probably get the votes" to impeach Obama.
And in a video posted online Tuesday, Rep. Kerry Bentivolio of Michigan responded to a woman during a Q&A session that "if I could write that bill and submit it," he said, moving to impeach Obama "would be a dream come true."
CNN's Bryan Koenig contributed to this report.