The government's attempts to send some asylum seekers to Rwanda will be voted on by the House of Lords later.

There will be votes this afternoon and this evening, and again on Wednesday - almost two years after ministers first announced the plan to send some migrants to east Africa.

The government has promised that the first flights to Rwanda will happen "in the spring".

You might recall the controversy over the idea back in January, when the former Conservative deputy chairman Lee Anderson was one of three Tories to resign, as around 60 of Rishi Sunak's MPs defied him.

Since then, the legislative digestive process has been gurgling on in the House of Lords, and will now lead to some votes.

Among the amendments being looked at, at what is known as the report stage in the House of Lords, are ones which challenge the government's assessment that Rwanda is safe.

One suggests Parliament can't judge it to be safe until measures such as a Monitoring Committee have been fully implemented.

Another says the presumption that the country is safe must be open to challenge if credible evidence emerges.

There is also an amendment that tries to protect victims of modern slavery.

Another suggests those who have put themselves in harm's way in support of the UK's armed forces should be exempted from being sent to Rwanda, as should their partners and dependents.

One of those seeking to amend the bill is the government's former reviewer of terrorism legislation, the independent peer Lord Anderson.

He told the BBC that Parliament was being expected to "pass into law a politically convenient fiction which has been exposed as such by the Supreme Court... that Rwanda is a safe place for asylum seekers".

Defending the bill, ex-Conservative leader Lord Howard said the Supreme Court was "not accountable to anyone" and that it was the government's responsibility to decide if Rwanda is safe.

The government is expected to suffer some defeats, meaning the legislation will have been changed, but this isn't the end of the matter.

In the coming weeks, the bill will return to the House of Commons, where a lot of the changes are expected to be overturned.

It is thought the bill could become law - having completed all of its parliamentary stages - before the end of this month.

The big question then is how long it takes after that for a first flight with migrants on board to take off for Rwanda.

"There won't be much hanging around," is how one government source put it to me.

It has prompted some with a key eye on the calendar to speculate that all this could coincide with the last possible moment the government could call a general election for early May.

But the vast majority at Westminster believe the government is much more likely to go to the polls much later in the year.

Meanwhile, Home Secretary James Cleverly, the cabinet minister with responsibility for the Rwanda plan, is in Brussels for a meeting of what is known as the Calais Group.

The get-together is for countries with an interest in cross channel illegal migration, including France, Belgium, the Netherlands and Germany.

Over the weekend, a seven year old girl died after a small boat capsized and sank just north of Dunkirk.