H.R.8703 - A bill to amend the Immigration and Nationality Act to change certain criteria for determining whether an alien is excludable from admission to or deportable from, the United States as a public charge and to provide that an alien may not be admitted to the United States unless a citizen of the United States enters into an enforceable agreement to provide support to such alien for a period of five years after admission.95th Congress (1977-1978)
Cosponsors: H.R.8703 — 95th Congress (1977-1978)All Information (Except Text)
Congress.gov databases include cosponsorship dates (including identification of "original" cosponsors) since 1981 (97th Congress). Prior to 1981, you may be able to find some information online, but often the information is available only in print form.
Sponsor: Rep. Yatron, Gus [D-PA-6] | Cosponsor statistics: 12 current - includes 0 original