Only those workers earning the equivalent of 15 federal minimum wages, amounting to 1.77 million pesos per month ($5,057), will continue to be subject to income taxes, constituting a minority of the workforce
That's just a proper noun that some countries use for their parliament.
There's a reason you wrote 'Congress' with a capital-C but the article wrote 'parliament' with a lowercase-P - the headline is using 'parliament' as a common noun (unlike, for example, the capital-P 'Parliament' of the United Kingdom where it's also used as the proper noun).
Argentina has a Congress.
That's just a proper noun that some countries use for their parliament.
There's a reason you wrote 'Congress' with a capital-C but the article wrote 'parliament' with a lowercase-P - the headline is using 'parliament' as a common noun (unlike, for example, the capital-P 'Parliament' of the United Kingdom where it's also used as the proper noun).