[7] After the Indigenisation and Economic Empowerment Bill, which provides for Zimbabweans to hold a majority share in all businesses, was passed in March 2008, Mangwana said that the law did not mean expropriation would take place and that there was "no reason to panic".
[8] Mangwana was nominated by ZANU-PF as its candidate for the House of Assembly seat from Chivi Central constituency, in Masvingo Province, in the March 2008 parliamentary election.
[10] On 7 January 2009, The Herald reported that Mangwana was taking over as Acting Minister of Information and Publicity following the dismissal of Sikhanyiso Ndlovu, who failed to win a seat in the 2008 election.
[11] In April 2009, Mangwana was named to represent ZANU-PF alongside Douglas Mwonzora of the MDC-T and Edward Mkhosi of MDC-N as co-chairs of a Committee to collect the views of Zimbabweans and to draft a new Constitution for Zimbabwe.
The constitution making process was the subject of a documentary, Democrats by Danish filmmaker Camilla Nielsson, in which Mangwana is featured prominently alongside Mwonzora.