[Carriage Hill]

I guess it’s better than nothing, but not much.
Does the US House even have effective, enforceable, legal subpoena power?

[rxsid]

Some information on their power:

contempt of Congress

2 U.S. Code § 192 - Refusal of witness to testify or produce papers

And the "valid legislative purpose" would be (a) misuse of federal funds and (b) investigation of election interference (Trump is a declared candidate for federal office).