In the U.S.A., it's illegal and a criminal offense just to endeavor, try or attempt to obstruct justice. One doesn't actually have to obstruct justice. An attempt alone is a criminal offense.

There is probably evidence of Trump endeavoring, trying or attempting to obstruct justice, which is a criminal offense.

The question is, will the U.S. congress and senate actually follow up and impeach Trump.

Maybe they're just waiting for more evidence to pile up so they can clinch Trump's impeachment.