Question: The band that Jason Cropper was an original member of sold how many albums in the US?

Context paragraphs:
My Name Is Jonas: "My Name Is Jonas" is a song by alternative rock band Weezer.  It is the first track of the band's self-titled 1994 debut album, also known as "The Blue Album".  It was written by vocalist Rivers Cuomo, drummer Patrick Wilson and guitarist Jason Cropper, and produced by Ric Ocasek.  Cropper wrote the song's acoustic intro; it is his only Weezer songwriting credit, as he left the band before the release of its first album.

M.O.T.O.: M.O.T.O. (Masters of the Obvious) is a garage punk band currently based in New Hampshire.  Formed in New Orleans in 1981 by Paul Caporino, the lineup of the band has seen many changes over the years, with Caporino being the only consistent member.  The band has recorded many albums, singles and CDs, including several albums for the Chicago-based record label Criminal IQ Records.

Steve Chapin: Stephen Chapin (born 30 Dec 1946) is an American singer/songwriter.  He is best known as the youngest of the four Chapin brothers, which include Harry Chapin and Tom Chapin and is son of drummer Jim Chapin and Elspeth Burke Chapin Hart, editor, artist and matriarch of the Burke, Leacock, Chapin clan.  He is the father of Christina Chapin, Frankie Chapin, and Jonathan Chapin.  He is the uncle of Jen Chapin and The Chapin Sisters.  He has toured nationally and Internationally, with his own band; The Harry Chapin Band; and with his late brother Harry Chapin as his band leader, musical director, arranger, producer, piano player/multi instrumentalist and singer.  He continues to perform concerts all over the world with his band The Harry Chapin Band which includes the original members of the band: Steve Chapin, Big John Wallace, and Howard Fields, and new members since 2005, Clark Wallace (Big John's son) and Jonathan Chapin (Steve's son).  Steve has also produced many albums including "The Chapin Family Christmas album", and has worked as a teacher, arranger, recording artist, commercial producer, performer, singer, and songwriter.  He has appeared on all Harry Chapin albums, and arranged and produced most of them.  Most notably, Harry Chapin's "Greatest Stories Live" album which includes his performance of one of his songs "Let Time Go Lightly".

Jason Cropper: Jason Rosanoff Cropper (born June 27, 1971) is an American musician best known as an original member of the band Weezer.

Acoustic Traveller: Acoustic Traveller is the 1996 album from John McEuen.  John is notable for being a longtime member of the Nitty Gritty Dirt Band for which he was a multi-instrument and composer/arranger.  He played on many of their charting albums and singles.  He also records as a solo artist, and has appeared as a guest musician on many albums by many artists.

Columns (band): Columns is an American death metal/grindcore band from Charlotte, North Carolina, United States.  The band formed in 2004.  Vocalist Adam Cody is also the vocalist for Glass Casket and Victory Records' Wretched.  Jason Skipper and Jake Wade are also currently members in the punk band One Another.  Guitarist Michael Lehmann was an original member of the goregrind band Hemdale.  Jake Troth, also of Glass Casket, was an original member of Columns who left the band in 2007.

Windsor for the Derby: Windsor for the Derby are an American post-rock band formed in Tampa, Florida in 1995 but currently based in Austin, Texas.  Since their formation, the group has released many albums through labels such as Trance Syndicate, Young God Records, and most recently on Secretly Canadian, and has maintained a revolving door line-up, with founding members Dan Matz and Jason McNeely acting as the band's core.

In Fear and Faith: In Fear and Faith is an American post-hardcore band from San Diego, California.  Formed in 2006, the group was signed to Rise Records and released three studio albums and two EPs.  Their debut full-length, "Your World on Fire", being released nearly a year after the band's signing to Rise in 2008, peaked at No. 193 on the "Billboard" 200.  Their second full-length album, "Imperial" was released the following year and sold even better, charting at No. 4 on the Top Heatseekers chart in the US alone.  Currently, the band does not feature any original members since the departure of guitarist Ramin Niroomand and drummer Mehdi Niroomand in 2014; vocalist Scott Barnes is the only current member of the band to have performed on all of the group's studio albums, though he is not an original member.

The Memphis Album: The Memphis Album is a cover album of Memphis soul songs by Australian singer Guy Sebastian released in Australia by Sony Music on 10 November 2007.  The album was recorded at Ardent Studios in Memphis with Steve Cropper, Donald 'Duck' Dunn, Steve Potts (a.k.a. The M.G.'s), and Lester Snell.  The M.G.'s were the Stax studio band who played on many of the original versions of the songs Sebastian recorded on the album.  Steve Cropper was also a co-writer of three of the tracks, "In the Midnight Hour", "Knock on Wood" and "(Sittin' On) The Dock of the Bay".  One original song written by Sebastian was included on the album.  "The Memphis Album" debuted at No. 3 on the ARIA Albums Chart, spending eight weeks in the Top 10.  It reached double platinum accreditation, and received a nomination for "Highest Selling Album" at the 2008 ARIA Music Awards.

Weezer: Weezer is an American rock band formed in Los Angeles in 1992, consisting of Rivers Cuomo (lead vocals, guitar), Patrick Wilson (drums), Brian Bell (guitar, backing vocals, keyboards), and Scott Shriner (bass guitar, backing vocals).  Weezer has sold 9.2 million albums in the US and over 17 million worldwide.

Supporting paragraphs: Jason Cropper Weezer
Answer: 9.2 million