new Law due Corona virus

due to corona virus situation, I want to take about how some countries create new laws or regulations, taking two example of:
– United Kingdom, they created coronavirus bill:
http://www.legislation.gov.uk/uksi/2020/129/regulation/2/made
https://news.sky.com/story/coronavirus-bill-emergency-laws-to-contain-spread-of-covid-19-published-11959342
https://www.congress.gov/bill/116th-congress/house-bill/6201

-US created coronavirus emergency relief package, and it became a law :
https://edition.cnn.com/2020/03/18/politics/coronavirus-congress-relief-senate-house/index.html

please start directly with the law and explain then no long introduction because I already write down some points. also, you can use those links as references.

thank you