Section 603 of the United States House Rules provides for the inception

Section 603 of the United States House Rules provides for the inception
of impeachment proceedings in the House of Representatives by charges
transmitted from the legislature of a State.

Section 603 states, inter alia:
Inception of impeachment proceedings in the House.
   House of Representatives there are various methods of setting
an impeachment in motion: by charges made on the floor on the
responsibility of a Member or Delegate

(II, 1303; III, 2342, 2400, 2469; VI, 525, 526, 528, 535, 536);
by charges preferred by a memorial, which is usually referred to
a committee for examination (III, 2364, 2491, 2494, 2496, 2499, 2515;
VI, 543); or by a resolution dropped in the hopper by a
Member and referred to a committee (Apr. 15, 1970, p. 11941-42; Oct. 23,
1973, p. 34873);
by a message from the President (III, 2294, 2319; VI, 498); by
charges transmitted from the legislature of a State

(III, 2469) or Territory (III, 2487) or from a grand jury (III, 2488);
or from facts developed and reported by an investigating committee
of the House
(III, 2399, 2444).