Anony Mous, there is also a corresponding resolution introduced and passed in the USA Senate (introduced by a Republican); see https://www.congress.gov/bill/116th-congress/senate-resolution/458 . The senate has the power to ratify USA treaties. If the House and Senate bills are reconciled, and if USA President Biden signs it, then it becomes law. The USA executive branch has the power to pressure foreign countries to change their practices, including ceasing their human rights violations. One way the US executive branch can do such is through the UN Security Council, as well by direct negotiations with individual countries.
https://www.congress.gov/bill/116th-congress/senate-resolution/458 says the following.
"Resolution agreed to in Senate with an amendment and an amended preamble by Unanimous Consent.
...
Passed Senate (12/19/2020)
This resolution calls on the President and the Department of State to (1) encourage the repeal of blasphemy, heresy, and apostasy laws in bilateral discussions between the United States and countries that have such laws; (2) designate countries that enforce such laws as countries of particular concern for religious freedom; and (3) oppose efforts by the United Nations to implement an international anti-blasphemy norm. The resolution also calls on the governments of countries that enforce such laws to amend or repeal them and to release anyone imprisoned pursuant to them."
The law is also relevant to the USA because some nations (including Islamic nations) are are trying to get the United Nations (which the USA is a member of) to implement an international anti-blasphemy norm, such as through a resolution of the UN General Assembly. That effort includes trying to pass an international resolution banning people for speaking and writing against Islam and other religions and against belief in God, and thus effects atheists (including me) and others. The resolutions in both chambers of the USA Congress calls on the USA executive branch (including the USA President) to oppose such efforts.
Though the House and Senate bill might only be symbolic (since maybe they don't have the authority to force the President and State Department to take action), if the USA executive branch supports the bills, it might later lay the groundwork for legislation in the USA (and USA court rulings) which prevent religions in the USA from putting excessive pressure against their members and former members for blasphemy, apostasy, and heresy. It might eventually lead to legislation banning the WT/JW religion from mandating (or encouraging) that faithful current JWs shun ex-JWs.