The Irish line-out is called as not straight, but the ball drifted through Fiona Tuite-O'Sullivans's fingertips anyway.

Ireland are making a couple of mistakes, but they may just be settling and finding their flow again after a few substitutions.

The USA have the advantage as they go storming towards the try line.

They get rewarded with a second advantage, as Erin King gets pinged for side entry.

A brilliant maul by the visitors.

Huge work by Aoife Wafer and the Irish forwards to stop a maul.

The forwards are looking so composed and powerful today.

Image source, Getty Images

Scott Bemand makes his first changes of the game.

Emily Lane leaves the field, with Aoibheann Reilly replacing her.

Brittany Hogan is on for debutant Jemima Adams Verling.

And in the front row, Eilis Cahill and Neve Jones replace Niamh O'Dowd and Cliodhna Moloney-MacDonald.

The scrum has been reset a couple of times, but Ireland are awarded a free kick.

Hope Rogers seemingly appears out of nowhere and holds up Ireland on the line.

However, we're going to the TMO to check a possible grounding?

It must be clear and obvious to overturn the referee's on-field decision.

Great carry by Freda Tafuna, with co-captain Georgie Perris-Redding helping to push her forward, but Ireland win a turnover as there is no clear release.

Scott Bemand's side are working through the hands once again.

First try of the second half on the cards?

The USA's Emily Henrich wins an impressive turnover and wins her side the ball back.

Cliodhna Moloney-MacDonald makes a big break and Ireland are just metres short from the tryline.

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And we're back!

A rare error by Stacey Flood, who has been superb so far today, gifts the USA the ball.

It's time for the first scrum of the second half.

The teams have returned to the pitch...

A big second half is on the way. Can Ireland continue to score tries or will the USA make a comeback?

The USA are arguably in a transitional period at the moment, with Jack Hanratty being appointed head coach at the beginning of this year and trying to build depth in squad.

They've played some great rugby, with co-captain Georgie Perris-Redding and front row Hope Rodgers scoring tries.

Earlier in the summer, the USA produced one of their most encouraging performances of the year when they defeated South Africa 26-19 at Loftus Versfeld to level their two-Test series.

Having lost the opening Test 34-21, the USA responded the following week, with several less experienced players stepping up to the demands of international rugby throughout the series.

They face an uphill task in the second half in Dublin.

Do you think Ireland can keep up the try-scoring excitement in the second half?

Thumbs up if you agree or thumbs down if disagree!

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A slightly hilarious little kick from Aoife Wafer into touch brings a very entertaining and high-scoring first half to an end.

That scoreline reflects an epic half of rugby, with tries from Vicky Elmes Kinlan, Cliodhna Moloney-MacDonald, Aoife Wafer and Eve Higgins putting Ireland into the lead.

What a carry by Ireland captain Erin King who goes storming down the middle of the field.

Unfortunately her pass was unable to find the hands of Eve Higgins, but Ireland have the line-out.

Ireland's shape is looking great so far. They're moving fast, working the ball through the hands quickly and putting in some great carries.

Vicky Elmes Kinlan looks so dangerous every time she gets the ball in hands.

Aoife Dalton has returned to the pitch from her head injury assessment.

Not a bad cover in Anna McGann who scored a try in her absence!