"This Open Secret"

"They know what is wrong with Donald Trump. They know why it's dangerous. They understand—or most of them do—the damage he can do to a system of governance that relies to a surprising degree on norms rather than rules, and whose vulnerability has been newly exposed. They know—or should—about the ways Trump's vanity and avarice are harming American interests relative to competitors like Russia and China, and partners and allies in North America, Europe, and the Pacific.
"They know. They could do something: hearings, investigations, demands for financial or health documents, subpoenas. Even the tool they used against the 42nd president, for failings one percent as grave as those of the 45th: impeachment.
"They know. They could act. And they don't.

James Fallows at The Atlantic laments congressional Republicans "failure of responsibility."

As does David Frum more generally.