Now Mr MacAskill has written to Ms Marra indicating that the Scottish Government will give full effect to a final proposal before the end of the current parliamentary session.
Ms Marra said: "I am delighted that the Scottish Government has accepted my proposals to combat human trafficking here in Scotland.
"The unique thing about these Scottish proposals is that they drill down into our public services to make our communities an unwelcome place for trafficking.
"I look forward to meeting with Kenny MacAskill to get a full understanding of the government's intentions. These proposals must be enacted in full. They work as a package with robust law and legal rights for victims to get the care that they need.
"Scotland will be a beacon to the world with these robust anti-trafficking laws once they are passed."
The Scottish Government intends to consolidate and strengthen existing criminal law against human trafficking, enhance the status of and support for victims and give statutory responsibility to relevant agencies to work with the Scottish Government to develop and implement a Scottish anti-trafficking strategy
Mr MacAskill said: "Human trafficking is a crime than transcends borders, and we will continue to work with the UK and Northern Irish Governments as we develop our Bill proposals.
"We are also grateful to Jenny Marra MSP for her interest in this agenda - the responses to her consultation on a possible Member's Bill confirmed strong support for Scottish human trafficking legislation.
"The work of the cross-party group on human trafficking has also been invaluable in raising awareness of this issue. Human trafficking is a matter of criminal law as well as victim support and it is right that legislation on this issue should be led by Scottish Ministers.
"Ultimately, we are determined to develop legislation that gives our police, prosecutors and other agencies the powers to make Scotland a hostile environment for human traffickers, but also helps to identify and support the needs of victims."
Robert McCrea, chief executive officer of Migrant Help, said: "As an organisation we have been continuously impressed by the way the Scottish Government approaches issues of human trafficking and modern day slavery. Victims support has always been caring and sophisticated.
"Therefore we understand why the Scottish Government would wish to formalise this work by compounding the best practice and experience into a bill proposal."
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