Louis -https://fred.stlouisfed.org/series/CSUSHPINSAConsumer Financial Protection Bureau -https://www.consumerfinance.gov/coronavirus/cares-act-mortgage-forbearance-what-you-need-know/Bankrate -https://www.bankrate.com/mortgages/federal-reserve-and-mortgage-ratesNational Association of Realtors -https://www.nar.realtor/sites/default/files/documents/2020-05-11-nar-flash-survey-economic-pulse-05-14-2020.pdf Forbes -https://www.forbes.com/sites/alyyale/2020/04/17/buying-a-home-during-the-pandemic-dont-expect-your-everyday-home-purchase/#fadad3d33b0cWashington Post -https://www.washingtonpost.com/health/2020/04/21/coronavirus-secondwave-cdcdirector/

Yes, many (probably, most) but not all MLS's will require you to join NAR and obtain the designation before you join.

I prefer standard MLS / NAR purchase and sale agreements and addenda to seller's attorney drafting it. 

@Christian Francois, to give you a cost breakdown on how much it is to obtain a license and hang it with a brokerage; ~$300 for the real estate course, ~$200 for State and National Exam, ~$150 for the Real Estate Commission to activate your license, ~$500 annually for NAR membership, $X per month MLS fee, $X per month in broker fees, commission split with the brokerage (80/20, 70/30, 60/40), etc.

You can become a member of NAR and begin networking as an agent. 

Meanwhile, residential MLS' generally require membership with NAR. 

You will most likely need to be a member of NAR, etc. 

But, because of the way the transaction of real property has changed, due to U.S. governmental policies and the NAR lobbying, wholesalers can appear to the seller as the same as other, terminal buyers, with the same minimal earnest money and same contingency clauses.  

Here in Chicago Illinois you can look them up through their local association (i.e, Chicago Association Realtors, CAR or IDFPR) or if they are a member of the National Association of Realtors (NAR) you should be able to look them up through that.

@Matt Keller  You might want to check with your Broker and with NAR if you're a member.