Actually the hearing was to begin to investigate what the Russians did to influence the US Presidential election. The relevant agencies have already reported that the Russians did use multiple methods in their attempt to manipulate it, to support Trump and to oppose Clinton.

From the intelligence report:

We assess Russian President Vladimir Putin ordered an influence campaign in 2016 aimed at the US presidential election. Russia’s goals were to undermine public faith in the US democratic process, denigrate Secretary Clinton, and harm her electability and potential presidency. We further assess Putin and the Russian Government developed a clear preference for President-elect Trump. We have high confidence in these judgments.


They have not drawn any conclusions as to what the result would have been had there been no Russian interference, but they left no doubt in their report that an attempt was made.

House Intelligence Committee to Hold Open Hearing on Russian Active Measures Investigation | U.S. House of Representatives

Here is the official title of today's hearing:

The House Permanent Select Committee on Intelligence (HPSCI) will be holding an open hearing on its investigation into Russian active measures during the 2016 election campaign.
The hearing will be held at 10:00 am on Monday, March 20 in room 1100 of the Longworth Building


So you are wrong, or perhaps you just subscribe to another alternative fact.